Table 6-55 POST error messages and user actions to address the error (continued)
Test description Failure descriptions Error code Possible user actions
Fan Fan not operating
correctly
90B The system fan might be malfunctioning.
For information about troubleshooting heat-related issues, see
http://support.hp.com/us-en/document/c01007591.
A hard reset can sometimes restore the system fan to working order.
See https://support.hp.com/us-en/document/c01684768 for details.
If the system fan continues to malfunction, contact support.
Routine maintenance for performance improvement
The table presents a summary of the suggested times for performing the routine maintenance tasks
that are described in this document.
Table 6-56
Routine maintenance tasks to improve performance
Tasks Weekly Monthly Occasionally
Perform a system tune-up. X
Run Windows Update. X
Scan for and remove viruses. X
Scan for and remove spyware and adware. X
Empty the Recycle Bin. X
Delete temporary Internet files. X
Back up user files. X
Create a restore point. X
Defragment the hard drive. X
Run Scan Disk. X
Clean the exterior of the computer. X
Close programs that are not being used. X
Prevent programs from loading at startup. X
Remove rear cover and clean fan blades and vents with compressed air. X
Common blue screen error messages
The following sections define blue screen error messages.
Error message list
For an example of a Bug Check Code Reference, use this image.
For more information, see
https://msdn.microsoft.com/en-us/library/windows/hardware/hh994433(v=vs.85).aspx.
Routine maintenance for performance improvement
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