Windows 10: Windows 10 1903 keyboard not working & wont re-install

As part of reconditioning a HP Pavilion 15 laptop for resale, we cleared all user files, user apps, and updated windows 10 1903 on 29Sept. We did not keep windows.old regrettably.

We noticed after a few days that the numlock wasn’t working, so we did the following:

1. Check BIOS – no numlock option
2. Checked the registry for the appropriate settings – okay
3. Troubleshooting said no issues
4. Startup repair indicated no issues.
5. Uninstalled the keyboard via the device a manager, and rebooted. Keyboard not re-installed and now the whole keyboard isn’t working.
6. Tried external keyboard – same problem
7. Keyboard works fine in BIOS = Windows issue?
8. If we turn on the on-screen keyboard, the laptop keyboard/numlock both work fine, until the next reboot.
9. Issue the same in safe mode & minimal boot

? Windows Registry Issue?

:)

 

Windows 7 wont install drivers

+1

If you having an issue installing a driver that worked before you formatted or wont install on a fresh build, sometimes this means hardware damage

 

Windows 7 wont install drivers

i dont think anyone here understands what your asking either when its nearly a 90% english dominated Tech forum.
Step 1
reinstall windows from scratch
Step 2
install all drivers from the cd that came with the god damn motherboard *common sense*
Step 3
update windows
Step 4
install misc etc crap like flash java etc etc
Step 5
Install GPU drivers
Step 6
go back to using your pc without issue.

 

Windows 10 upgrade problem, no input accepted

I really hate having to come here and ask for help, but I really am stumped. It hurts my geek pride. I have a PC with fairly modern hardware in it. It has a p8p67 pro in it. I have tried upgrading windows 10 on it twice now. Both times I have had the same result.

After windows finishes upgrading it goes to the log in/set up screen. I can't do anything. No keyboard or mouse input is accepted.

I will list some, or hopefully all, of the troubleshooting steps I have tried:

• Move keyboard and mouse to different USB ports.
• Try different keyboard or mouse.
• Restart computer, repeatedly.
• Google for related issues.
• Update Bios, because why not.
• Create boot media and revert to windows 7.

The windows 10 system restore boot media works fine with keyboard and mouse. All USB ports work in windows 7. I don't know what is wrong. I suspect that windows 10 is lacking a driver of some sort, but since the computer accepts no input I have no way of checking for which driver let alone installing it.

Please help me figure this out. If I have to revert back to windows 7 again, I am not going to get it upgraded to windows 10. Thank you in advanced.