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One of the nicest things about HP computers is that they come with on board hardware diagnostics. In case they are outdated you can open the HP website for support and drivers > enter the computer's serial or product number and operating system > view all available drivers > download the latest edition of the UEFI diagnostics.
HP Software and Driver Downloads for HP Printers, Laptops, Desktops and More | HP® Customer Support
An alternative is to download the UEFI diagnostics version 6.4 from this link:
HP PC Hardware Diagnostics | HP® Official Site
To use the HP UEFI diagnostics you will power on the computer and repetitively click the F2 or F10 key.
Then in the bios menu open UEFI diagnostics.
Run the loop until failure test in the evening.
The next day view the test.
If it has stopped that indicates that it found a problem and aborted the testing and posted an error code.
If it is still running and has made at least one loop you can discontinue testing by clicking the keyboard escape key.
Then view the UEFI log to confirm the pass.
Then reboot.
If you have ran the loop until failure test you will have checked motherboard, CPU, GPU, RAM, drives, etc.
If you want to check the keyboard (not keyboard switches but keyboard keys) there is a component test in the UEFI diagnostics for the keyboard. This can be run after the UEFI loop until failure testing and either before or after checking the UEFI logs.
Once you have ruled in or out hardware problems you can then move onto software testing.
For software testing first check the operating system and the drive:
1) open administrative command prompt and type or copy and paste these commands:
2) sfc /scannow
3) dism /online /cleanup-image /restorehealth
4) chkdsk /scan
5) When these have completed > right click on the top bar or title bar of the administrative command prompt box > left click on edit then select all > right click on the top bar again > left click on edit then copy > paste into the thread
If you think you may need better testing of the drive files you can plan to run this command overnight using administrative command prompt: chkdsk /x /f /r
To find and post the results into the thread use this link:
Read Chkdsk Log in Event Viewer in Windows 10 Windows 10 Performance Maintenance Tutorials
In the left column of this webpage is a section for my computer. Please fill out the information for the HP computer including: PSU, cooler, case, peripherals including keyboard, mouse, etc.)