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HP Notebook PC (AMD) HP 255 G4 Notebook PC Maintenance and Service Guide...
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Windows 8.1 functionality. See change without notice. The only warranties for http://www.microsoft.com for details. HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty.
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Safety warning notice WARNING! To reduce the possibility of heat-related injuries or of overheating the device, do not place the device directly on your lap or obstruct the device air vents. Use the device only on a hard, flat surface. Do not allow another hard surface, such as an adjoining optional printer, or a soft surface, such as pillows or rugs or clothing, to block airflow.
Table of contents 1 Product description ............................1 2 External component identification ......................... 5 Display ................................... 5 Right side ................................6 Left side ................................. 7 Top ..................................8 TouchPad ............................. 8 Lights ..............................9 Buttons .............................. 10 Keys ..............................11 Bottom .................................
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Restore and recovery ............................68 Recovering using HP Recovery Manager ..................69 What you need to know before you get started ............69 Using the HP Recovery partition (select models only) ..........70 Using HP Recovery media to recover ................70...
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Recovering using the recovery media ................77 Changing the computer boot order .............. 77 11 Using HP PC Hardware Diagnostics (UEFI) ..................... 79 Downloading HP PC Hardware Diagnostics (UEFI) to a USB device ..............79 12 Specifications ............................81 Computer specifications ............................81 39.6-cm (15.6-in) display specifications ......................
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14 Power cord set requirements ........................91 Requirements for all countries ........................... 91 Requirements for specific countries and regions ....................92 15 Recycling ..............................95 Index ................................97 viii...
Product description Category Description Product name HP Notebook PC HP 255 G4 Notebook PC Processors AMD Dual-Core E-Series Processor E1-6015 (1.4-GHz, 1-MB L2 cache, 1333-MHz, dual, 15W) AMD Quad-Core A-Series Accelerated Processor A6-6310 (1.8-GHz, SC turbo up to 2.4 GHz, 2-MB L2 cache, 1600-MHz, quad, 15W) AMD Quad-Core A-Series Accelerated Processor A8-7410 (2.2-GHz, SC turbo 2.5 GHz, 2-MB L2 cache, 1600-MHz, quad, 15W)
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Supports M-disc Supports configuration without optical drive Webcam/microphone HP TrueVision HD: HD camera - Fixed (no tilt) + activity LED, USB 2.0, M-JPEG, 1280 x 720 by 30 frames per second HP Webcam– 640 x 480 by 24 frames per second...
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Category Description Keyboard/pointing Full-size "island style" keyboard with numeric keypad devices TouchPad with multi-touch gestures, 2-finger scrolling, and pinch-zoom enabled Taps enabled by default Support Windows 8 Modern Trackpad Gestures Power requirements AC adapters: 65-W Smart nPFC, 3 pin, RC 4.5mm connector - non slim for use in discrete models 45-W Smart nPFC, 3 pin, RC 4.5mm connector - non slim for use in UMA models 65-W EM Smart nPFC, 3 pin, RC 4.5mm connector, 90 degree plug design for use in India/China 1 meter power cord...
From the Windows desktop, click the question mark icon in the notification area, at the far right of the taskbar. To access this document in Windows 7: Select Start > HP Support Assistant > Next > My computer > User Guides.
Right side Component Description ● Power light On: The computer is on. ● Blinking: The computer is in the Sleep state, a power- saving state. The computer shuts off power to the display and other components. ● Off: The computer is off or in Hibernation. Hibernation is a power-saving state that uses the least amount of power.
Left side Component Description Power connector Connects an AC adapter. ● AC adapter/battery light White: The AC adapter is connected and the battery is fully charged. ● Blinking white: The AC adapter is disconnected and the battery has reached a low battery level. ●...
To access this document: ▲ From the Start screen, type support, and then select the HP Support Assistant app. ‒ or – From the Windows desktop, click the question mark icon in the notification area, at the far right of the taskbar.
Lights Component Description Caps lock light On: Caps lock is on, which switches the keys to all capital letters. ● Mute light Amber: Computer sound is off. ● Off: Computer sound is on.
Buttons Component Description ● Power button When the computer is off, press the button to turn on the computer. ● When the computer is on, press the button briefly to initiate Sleep. ● When the computer is in the Sleep state, press the button briefly to exit Sleep.
Keys Component Description Displays system information when pressed in combination with key. Executes frequently used system functions when pressed in combination with the key, or the spacebar. Windows key Windows 8.1: Returns you to the Start screen from an open app or the Windows desktop.
Bottom Component Description Battery lock Locks the battery in the battery bay. Battery bay Holds the battery. Battery release latch Releases the battery. Speakers (2) Produce sound. Chapter 2 External component identification...
Microsoft® Certificate of Authenticity label (select models only prior to Windows 8)—Contains the Windows Product Key. You may need the Product Key to update or troubleshoot the operating system. HP platforms with Windows 8 or Windows 8.x preinstalled do not have the physical label. Instead a Digital Product Key is electronically installed.
Illustrated parts catalog Computer major components NOTE: HP continually improves and changes product parts. For complete and current information on supported parts for your computer, go to http://partsurfer.hp.com, select your country or region, and then follow the on-screen instructions. Computer major components...
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For a list of country code suffixes for the top cover/keyboard spare part numbers listed below, see Bottom cover on page For use in all black models (HP Notebook and HP 255 G4 Notebook) 813974-xxx For use in turbo silver HP Notebook models...
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1-TB, 5400-rpm, 2.5-inch 778192-005 ● 750 GB, 5400 rpm hard drive, 2.5 inch 778190-005 ● 500-GB, 5400-rpm, 7-mm 778186-005 For use only in HP 255 G4 Notebook models: ● 500-GB, 7200-rpm, 7-mm 764211-005 (12) Optical drive board 813956-001 (13) Speakers (includes left and right speakers and cable)
For use in Switzerland 755530-111 For use in Taiwan 755530-AB1 For use in Thailand 755530-201 For use in the United Kingdom and Singapore 755530-031 Rubber Kit (includes front and rear feet) 813963-001 Screw Kit 813964-001 HP HDMI to VGA Adapter 701943-001 Miscellaneous parts...
Antenna (includes wireless antenna cable and transceiver) 813923-001 Display cable (includes display panel cable and webcam/microphone cable) Non-touch screen 813943-001 Touch screen 813944-001 Display enclosure: For use in HP Notebook models without a touch screen: ● Black models 813925-001 Chapter 3 Illustrated parts catalog...
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Red models 813929-001 ● White silver models 813926-001 ● Blue models 813927-001 ● Purple models 813928-001 For use in HP Notebook models with a touch screen: ● Black models 813936-001 ● Turbo silver models 813935-001 ● Red models 813934-001 ●...
Removal and replacement procedures preliminary requirements Tools required You will need the following tools to complete the removal and replacement procedures: ● Flat-bladed screwdriver ● Magnetic screwdriver ● Phillips P0 and P1 screwdrivers Service considerations The following sections include some of the considerations that you must keep in mind during disassembly and assembly procedures.
Drive handling CAUTION: Drives are fragile components that must be handled with care. To prevent damage to the computer, damage to a drive, or loss of information, observe these precautions: Before removing or inserting a hard drive, shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
Typical electrostatic voltage levels Relative humidity Event Walking across carpet 35,000 V 15,000 V 7,500 V Walking across vinyl floor 12,000 V 5,000 V 3,000 V Motions of bench worker 6,000 V 800 V 400 V Removing DIPS from plastic tube 2,000 V 700 V 400 V...
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● Avoid contact with pins, leads, or circuitry. ● Turn off power and input signals before inserting or removing connectors or test equipment. Equipment guidelines Grounding equipment must include either a wrist strap or a foot strap at a grounded workstation. ●...
Customer Self-Repair is supported in your location. NOTE: HP continually improves and changes product parts. For complete and current information on supported parts for your computer, go to http://partsurfer.hp.com, select your country or region, and then follow the on-screen instructions. Component replacement procedures...
Battery Description Spare part number 4-cell, 41-Whr, 2.8-Ah Li-ion battery 807957-001 3-cell, 31-Whr, 2.8-Ah Li-ion battery 807956-001 Before disassembling the computer, follow these steps: Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
DVD+/-RW Double-Layer SuperMulti Drive for use in HP Notebook models (includes bracket and bezel) 813952-001 DVD+/-RW Double-Layer SuperMulti Drive for use in HP 255 G4 Notebook models (includes bracket and bezel) 814617-001 Before removing the optical drive, follow these steps: Shut down the computer.
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Chapter 5 Removal and replacement procedures for Customer Self-Repair parts...
Accessing these parts can damage the computer or void the warranty. NOTE: HP continually improves and changes product parts. For complete and current information on supported parts for your computer, go to http://partsurfer.hp.com, select your country or region, and then follow the on-screen instructions. Component replacement procedures...
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Before removing display subcomponents while the display assembly is still attached to the computer, follow these steps: Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system. Disconnect all external devices connected to the computer.
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Lift to disengage the adhesive that secures the webcam/microphone module to the display, and then remove the module (2). To remove the display panel: Remove the four Phillips PM2.0×2.4 screws (1) that secure the display panel to the enclosure. Rotate the display panel onto the keyboard (2) to gain access to the display cable connection on the back of the panel.
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Remove the display panel from the computer (3). Reverse this procedure to reassemble and install the display bezel, webcam/microphone module, and display panel. Chapter 6 Removal and replacement procedures for Authorized Service Provider parts...
Description Spare part number Top cover with keyboard for use in all black models (HP Notebook and HP 255 G4 Notebook) 813974-xxx Top cover with keyboard for use in turbo silver HP Notebook models...
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Remove the 11 Phillips PM2.5×8.0 screws (2) that secure the bottom cover to the computer. Start prying at the front of the computer and work around to the back to separate the bottom cover from computer (1). Remove the bottom cover (2). Reverse this procedure to install the bottom cover.
Optical drive board Description Spare part number Optical drive board (includes cable) 813956-001 Before removing the optical drive board, follow these steps: Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
778192-005 750 GB, 5400 rpm, 2.5 in 778190-005 500-GB, 5400-rpm, 7-mm 778186-005 For use only in HP 255 G4 Notebook models: 500-GB, 7200-rpm, 7-mm 764211-005 Hard Drive Hardware Kit (includes brackets and connector) 813949-001 Before removing the hard drive, follow these steps: Shut down the computer.
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Lift the hard drive assembly from the computer (3). To disassemble the hard drive, pull the connector away from the drive to remove it (1). To remove the hard drive brackets, remove the two Phillips PM3.0×3.0 screws (2) that secure each bracket to the hard drive.
WLAN module Description Spare part number Realtek RTL8723BE 802.11b/g/n 1x1 Wi-Fi + BT4.0 Combo Adapter 792610-005 Realtek RTL8188EE 802.11b/g/n 1x1 Wi-Fi Adapter 792609-005 CAUTION: To prevent an unresponsive system, replace the wireless module only with a wireless module authorized for use in the computer by the governmental agency that regulates wireless devices in your country or region.
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Remove the WLAN module by pulling the module away from the slot at an angle (3). NOTE: If the WLAN antennas are not connected to the terminals on the WLAN module, the protective sleeves must be installed on the antenna connectors, as shown in the following illustration. Reverse this procedure to install the WLAN module.
Memory module Description Spare part number 8-GB (PC3L, 12800, 1600-MHz) 693374-005 4-GB (PC3L, 12800, 1600-MHz) 691740-005 2-GB (PC3L, 12800, 1600-MHz) 691739-005 Before removing a memory module, follow these steps: Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
RTC battery Description Spare part number RTC battery 759981-001 Before removing the RTC battery, follow these steps: Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system. Disconnect all external devices connected to the computer.
USB board Description Spare part number USB board (includes cable) 813953-001 Before removing the USB board, follow these steps: Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system. Disconnect all external devices connected to the computer.
Speakers Description Spare part number Speakers (includes left and right speakers and cable) 813965-001 Before removing the speakers, follow these steps: Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system. Disconnect all external devices connected to the computer.
Heat sink assembly NOTE: The heat sink assembly spare part kit includes replacement thermal materials. Description Spare part number Heat sink for use in models with discrete graphics memory 813948-001 Heat sink for use in models with UMA 813947-001 NOTE: To properly ventilate the computer, allow at least 7.6 cm (3.0 in) of clearance on the left side of the computer.
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Remove the heat sink assembly from the system board. NOTE: Heat sink appearance may vary. Discrete graphics: UMA graphics: ● Discrete graphics: Thermal paste is used on the processor and associated heat sink area (1)(2), as well as the graphics chip and associated heat sink area (3)(4). Component replacement procedures...
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● UMA graphics: Thermal paste is used on the heat sink (1) and the processor (2). Reverse this procedure to reassemble and install the heat sink assembly. Chapter 6 Removal and replacement procedures for Authorized Service Provider parts...
Description Spare part number 813946-001 NOTE: To properly ventilate the computer, allow at least 7.6 cm (3.0 in) of clearance on the left side of the computer. The computer uses an electric fan for ventilation. The fan is controlled by a temperature sensor and is designed to turn on automatically when high temperature conditions exist.
TouchPad button board Description Spare part number TouchPad button board (includes bracket and cables) 813954-001 Before removing the TouchPad button board, follow these steps: Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
AMD E1-6015 processor 813966-xxx UMA graphics memory, touch screen models: ● AMD A8-7410 processor 813970-xxx ● AMD A6-6310 processor 813968-xxx For use in HP 255 G4 models: UMA graphics memory ● AMD A8-7410 processor 814612-xxx ● AMD A6-6310 processor 814611-xxx ●...
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Remove the bottom cover (see Bottom cover on page 35). Remove the hard drive (see Hard drive on page 38). NOTE: When replacing the system board, be sure that the following components are removed from the defective system board and installed on the replacement system board: ●...
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Lift the side of the system board (2), and then pull the board away from the computer (3). Reverse this procedure to install the system board. Component replacement procedures...
For use in non-touch screen models (includes display panel cable and webcam/microphone cable) 813943-001 For use in touch screen models (includes display panel cable and webcam/microphone cable) 813944-001 Display enclosure for use in HP Notebook models without a touch screen Black models 813925-001 Red models...
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Before removing the display assembly, follow these steps: Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system. Disconnect all external devices connected to the computer. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer.
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Use the following image to determine proper cable routing around the hinge. (1): Display cable routing path (2): Webcam cable routing path (3): Antenna cable routing path If it is necessary to replace any of the display assembly subcomponents: To remove the display bezel: Flex the inside of the top edge (1), the left and right edges (2), and the bottom edge (3) of the display bezel until the bezel disengages from the display enclosure.
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Remove the webcam/microphone module (2). (The module is attached to the display enclosure with double-sided tape.) To remove the display panel: Remove the four Phillips PM2.0×2.4 screws (1) that secure the display panel to the enclosure. Rotate the display panel out of the enclosure (2) to gain access to the display cable connection on the back of the panel.
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Remove the display panel from the computer (3). NOTE: In this procedure, the display will NOT be connected to the computer, as shown in the following image. To remove the display hinges: Remove the eight Phillips PM2.5×3.5 screws (1) (four per hinge) that secure the hinges to the display enclosure.
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To remove the wireless antenna cables and transceivers, release the wireless antenna cables from the clips built into the display enclosure (1), and then remove the cables (2). To remove the display/webcam cable, remove the cable from the clips built into the display enclosure (1), and then remove the cable from the display enclosure (2).
Power connector cable Description Spare part number Power connector cable 813945-001 Before removing the power connector cable, follow these steps: Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system. Disconnect all external devices connected to the computer.
Power button board Description Spare part number Power button board (includes cable) 813955-001 Before removing the power button board, follow these steps: Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
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Chapter 6 Removal and replacement procedures for Authorized Service Provider parts...
Updating the BIOS Updated versions of the BIOS may be available on the HP website. Most BIOS updates on the HP website are packaged in compressed files called SoftPaqs. Some download packages contain a file named Readme.txt, which contains information regarding installing and troubleshooting the file.
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From the Start screen, type support, and then select the HP Support Assistant app. ‒ or – From the Windows desktop, click the question mark icon in the notification area, at the far right of the taskbar. Click Updates and tune-ups, and then click Check for HP updates now.
Updating the BIOS Updated versions of the BIOS may be available on the HP website. Most BIOS updates on the HP website are packaged in compressed files called SoftPaqs. Some download packages contain a file named Readme.txt, which contains information regarding installing and troubleshooting the file.
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Select Start, type hp support assistant, and then select the HP Support Assistant program. Follow the on-screen instructions to identify your computer and access the BIOS update you want to download. At the download area, follow these steps: Identify the BIOS update that is later than the BIOS version currently installed on your computer.
Use HP Recovery Manager after you successfully set up the computer to create HP Recovery media. This step creates a backup of the HP Recovery partition on the computer. The backup can be used to reinstall the original operating system in cases where the hard drive is corrupted or has been replaced. For...
The creation process can take an hour or more. Do not interrupt the creation process. ● If necessary, you can exit the program before you have finished creating all of the recovery DVDs. HP Recovery Manager will finish burning the current DVD. The next time you start HP Recovery Manager, you will be prompted to continue, and the remaining discs will be burned.
Applications Reinstall, and then follow the on-screen instructions. ● On select models, if you want to reset your computer using a minimized image, you can choose the HP Minimized Image Recovery option from the HP Recovery partition or HP Recovery media. Minimized Image Recovery installs only drivers and hardware-enabling applications.
Using HP Recovery media to recover You can use HP Recovery media to recover the original system. This method can be used if your system does not have an HP Recovery partition or if the hard drive is not working properly.
Changing the computer boot order If your computer does not restart in HP Recovery Manager, you can change the computer boot order, which is the order of devices listed in BIOS where the computer looks for startup information. You can change the selection for an optical drive or a USB flash drive.
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Chapter 9 Backing up, restoring, and recovering in Windows 8.1...
(purchased separately) to create recovery discs, or you can obtain recovery discs for your computer from the HP website. If you use an external optical drive, it must be connected directly to a USB port on the computer, not to a USB port on an external device, such as a USB hub.
Creating the recovery media Select Start and type recovery in the search field. Select HP Recovery Manager from the list. Allow the action to continue, if prompted. Click Recovery Media Creation. Follow the on-screen instructions to continue. To recover, see...
Tips for a successful backup ● Number backup discs before inserting them into the optical drive. ● Store personal files in the Documents, Music, Pictures, and Videos libraries, and back up these folders periodically. ● Save customized settings in a window, toolbar, or menu bar by taking a screen shot of your settings. The screen shot can be a time-saver if you have to re-enter your preferences.
Restoring specific files is also useful if you ever choose to recover the original system using HP Recovery Manager. You can only restore specific files that you have backed up before.
● If the recovery media do not work, you can obtain recovery discs for your system from the HP website. ● The Minimized Image Recovery option is recommended for advanced users only. All hardware-related drivers and software are re-installed, but other software applications are not. Do not interrupt the process until it is complete, otherwise the recovery will fail.
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Insert the flash drive into a USB port. Restart the computer. Press while the computer is restarting, and then press for boot options. Select the flash drive from the boot options window. Chapter 10 Backing up, restoring, and recovering in Windows 7...
11 Using HP PC Hardware Diagnostics (UEFI) HP PC Hardware Diagnostics is a Unified Extensible Firmware Interface (UEFI) that allows you to run diagnostic tests to determine whether the computer hardware is functioning properly. The tool runs outside the operating system so that it can isolate hardware failures from issues that are caused by the operating system or other software components.
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Chapter 11 Using HP PC Hardware Diagnostics (UEFI)
12 Specifications Computer specifications Metric U.S. Dimensions (touch models) Depth 254.6 mm 10.02 in Width 384.3 mm 15.13 in Height 24.3 mm 0.96 in Weight 1994 g 4.40 lb 3 cell battery 2040 g 4.50 lb 4 cell battery Input power Operating voltage and current 19.5 V dc @ 3.33 A –...
Hard drive specifications 1-TB* 750-GB* 500-GB* Dimensions Height 9.5 mm 9.5 mm 7.0 mm or 9.5 mm Length 100.4 mm 100.4 mm 100.6 mm Width 69.9 mm 69.9 mm 70.1 mm Weight 107.0 g 115.0 g 92.0 g Interface type SATA SATA SATA...
The steps below will remove personal data from the notebook PC, including the nonvolatile memory found in Intel-based and AMD-based system boards. Some of these steps are disclosed in the Maintenance & Service Guides available for HP PC products available on the product support pages at www.hp.com.
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Remove and retain the storage drive or clear the contents of the drive. Hard Disk Drive (HDD) Clear the HDD contents by using the HP Disk Sanitizer® utility or a third party application that, ideally, is U.S. Department of Defense (DOD) 5220.22-M approved.
(keyboard, when the system BIOS is memory and is accessible) mouse, & updated. available on the HP battery website. Writing data management). to this ROM in an inappropriate manner can render the PC nonfunctional. DIMM Serial...
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Fingerprint 512kByte Stores By enrolling in HP Only a digitally signed reader Flash fingerprint ProtectTools Security application can make templates. Manager. the call to write to the flash.
Questions and answers How can the BIOS settings be restored (returned to factory settings)? Turn on or restart the computer and press when prompted near the bottom of the display. Select File, then select Restore defaults. Follow the on-screen instructions. Select File, save changes and exit, then press Enter.
14 Power cord set requirements The wide-range input feature of the computer permits it to operate from any line voltage from 100 to 120 volts ac, or from 220 to 240 volts ac. The 3-conductor power cord set included with the computer meets the requirements for use in the country or region where the equipment is purchased.
Requirements for specific countries and regions Country/region Accredited agency Applicable note number Argentina IRAM Australia Austria Belgium CEBEC Brazil ABNT Canada Chile Denmark DEMKO Finland FIMKO France Germany India Israel Italy Japan The Netherlands KEMA New Zealand SANZ Norway NEMKO The People's Republic of China Saudi Arabia SASO...
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Country/region Accredited agency Applicable note number The flexible cord must be Type SVT/SJT or equivalent, No. 18 AWG, 3-conductor. The wall plug must be a two-pole grounding type with a NEMA 5-15P (15 A, 125 V ac) or NEMA 6-15P (15 A, 250 V ac) configuration. CSA or C-UL mark. UL file number must be on each element.
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Chapter 14 Power cord set requirements...
Follow the local laws and regulations in your area for battery disposal. HP encourages customers to recycle used electronic hardware, HP original print cartridges, and rechargeable batteries. For more information about recycling programs, see the HP Web site at http://www.hp.com/...
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