HP ZBook 15 G4 - Routine Maintenance for Performance Improvement

Test description Displayed message Error code Possible user actions
Because seating or reseating a wireless LAN adapter is unique to each
computer model. For more information, see the chapter titled “Removal
and replacement procedures for Customer Self-Repair parts.”
Fan Fan not operating
correctly
90B The system fan may be malfunctioning.
For information on troubleshooting heat-related issues, see “HP
Notebook PCs - Fan is Noisy and Spins Constantly, PC is Warmer than
Normal” at http://support.hp.com/us-en/document/c01007591.
A hard reset can sometimes restore the system fan to working order. See
“Use Hard Reset to Resolve Hardware and Software Issues” at
http://h20566.www2.hp.com/hpsc/doc/public/display?
docLocale=en_US&docId=emr_na-c01684768 for details.
If the system fan continues to malfunction, contact support.
Fan System temperature 90D System BIOS detected your computer was previously shut down to avoid
overheating. Overheating may occur if the cooling vents are blocked or
the operating temperature exceeds system specications. The computer
should return to normal operation once the situation is resolved.
Fan fan speed failure 90F The system has detected that a cooling fan may not be working properly.
Before continuing, perform the following steps:
●
Press Enter to clear the message and go to the Windows desktop.
●
Shutdown Windows.
●
While the computer is o, clean the vent exterior to remove dust
build-up.
●
Check for a BIOS update.
Routine Maintenance for Performance Improvement
See “HP Notebook PCs - Improving the Performance of Your Computer” at http://h20564.www2.hp.com/
hpsc/doc/public/display?docLocale=en_US&docId=emr_na-c00816938.
The following table presents a summary of the suggested times for performing the routine maintenance
tasks described in this document.
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 les. X
Back up user les. X
Create a restore point. X
Defragment the hard drive. X
Run Scan Disk. X
Additional information 141