A New Device Is Not Recognized As Part Of The System; Computer Will Not Start; Power Light Blinks Red Three Times And Then White Two Times - HP Z Series Maintenance And Service Manual

to disconnect the power cord from the AC outlet and allow the internal system components to cool
before touching.

A new device is not recognized as part of the system

Use this information to troubleshoot the computer.
Cause
Cables of new external device are loose or
power cables are unplugged.
Power switch of new external device is not
turned on.
When the system advised you of changes to
the configuration, you did not accept them.
A plug and play board might not automatically
configure when added if the default
configuration conflicts with other devices.
USB ports on the computer are disabled in
Computer Setup.

Computer will not start

Use this information to troubleshoot the computer.
Cause
Incorrect memory modules were used in the
upgrade, or memory modules were installed in
the wrong location.

Power light blinks red three times and then white two times

Use this information to troubleshoot the computer.
Solution
Be sure that all cables are properly and securely connected and that pins
in the cable or connector are not bent down.
Turn off the computer, turn on the external device, and then turn on the
computer to integrate the device with the computer system.
Reboot the computer and follow the instructions for accepting the
changes.
Use Windows Device Manager to clear the automatic settings for the
board, and choose a basic configuration that does not cause a resource
conflict. You can also use Computer Setup to reconfigure or disable
devices to resolve the resource conflict.
To access Device Manager in Windows, type device manager in the
taskbar search box, and then select Device Manager from the list of
applications.
Run the Computer Setup utility and ensure that Device available is
selected for appropriate USB ports under Advanced > Port Options.
Solution
1. Review the documentation that came with the system to determine
if you are using the correct memory modules and to verify the
proper installation.
NOTE: DIMM1 or XMM1 must always be installed. DIMM1 must be
installed before DIMM3.
2. Observe the beeps and lights on the front of the computer. Beeps
and blinking lights are codes for specific problems.
3. If you still cannot resolve the issue, contact Customer Support.
A new device is not recognized as part of the system 47