Touchscreen Problems; Universal Serial Bus (Usb) Specific Problems - Dell C8618QT User Manual

Touchscreen Problems

Specific
Symptoms
Windows 7

Universal Serial Bus (USB) Specific Problems

Specific
Symptoms
USB interface is
not working
SuperSpeed USB
3.0 interface is
slow.
Wireless USB
peripherals stop
working when a
USB 3.0 device is
plugged in
USB is not
working
62 | Troubleshooting
What You
Possible Solutions
Experience
Cursor does not
accurately follow
• Install touch driver for Windows 7, see Dell Support
your finger when
you touch the
screen
What You Possible Solutions
Experience
USB peripherals • Check that your display is turned ON.
are not working • Reconnect the upstream cable to your computer.
• Reconnect the USB peripherals (downstream
• Switch off and then turn on the display again.
• Reboot the computer.
• Some USB devices like external portable HDD require
SuperSpeed USB • Check that your computer is USB 3.0-capable.
3.0 peripherals • Some computers have USB 3.0, USB 2.0, and USB 1.1
working slowly or
not working at all • Reconnect the upstream cable to your computer.
• Reconnect the USB peripherals (downstream
• Reboot the computer.
Wireless USB • Increase the distance between the USB 3.0
peripherals
responding slowly • Position your wireless USB receiver as close as
or only working
as the distance • Use a USB-extender cable to position the wireless
between itself
and its receiver
decreases
No USB Refer to input source and USB pairing table
functionalities
site at: http://www.dell.com/support/monitors.
connector).
higher electric current; connect the device directly to
the computer system.
ports. Ensure that the correct USB port is used.
connector).
peripherals and the wireless USB receiver.
possible to the wireless USB peripherals.
USB receiver as far away as possible from the USB
3.0 port.