HP ZBook 15 G4 Maintenance And Service Manual page 117

1. Note the blue screen error message and what activity was performed at the time.
2. Perform a hard reset
3. Reset BIOS to default
4. Run HP Hardware Diagnostics
hardware issues.
● HP PC Hardware Diagnostics (UEFI) tool to test hard drive, memory and system.
● Thermal Monitor (available only to authorized service providers/technicians) tool to monitor
temperature limits of processor and GPU. See "HP Thermal Monitor" in
and Tools on page
5. Remove or undo recently added hardware
on page 79). For example, incompatible memory or new solid-state drive storage.
6. Reseat cables and connections
installation of memory and hard drive.
7. Verify that a minimum of at least 100 MB of free space is available on your Windows partition.
8. If you can start Windows:
a. Update BIOS and drivers
incompatibilities.
b. Get all the latest updates, using Windows Update.
c. Undo recent changes:
– Startup using Last Known Good Configuration.
Use System Restore.
–
– Roll back device driver in Device Manager.
d. Check for specific Error Message. See
e. Boot to safe mode
9. If you cannot start Windows:
a. Boot to safe mode.
b. Use Startup Repair to fix Windows startup files.
c. Undo recent changes using System Restore to revert to a previous "working" state.
d. Check for specific STOP error by analyzing Crash Dump (retrieved via a bootable USB). See
Windows Debugging Tool on page
e. Restore computer using System Recovery or image backup to factory settings.
10. Lastly, test with essential hardware configuration
along with a verified working operating system (i.e., USB Windows-To-Go), if available, to isolate the
software issue.
Tips & tricks
In some cases, the computer may reboot automatically before you have time to read the blue screen.
To identify the error message itself, disable the automatic restart using one of the following methods:
(8. Hard reset on page 89) after disconnecting all external peripherals.
(9. Soft reset (Default Settings) on page
(6. HP Hardware Diagnostics and Tools on page
80.
(5. Remove or uninstall recently added hardware, software
(10. Reseat cables and connections on page
(4. Update BIOS and drivers on page
Common Blue Screen Error Messages on page
(11. Test with minimum configuration on page
(11. Test with minimum configuration on page
143.
90) to prevent booting to another device.
79) to support updates for
91) to troubleshoot issues.
91)
(11. Test with minimum configuration on page
Common issues and possible solutions 107
80) to isolate major faulty
6. HP Hardware Diagnostics
90). Pay attention to proper
142.
Use
91)