Windows 10: Windows 10 upgrade - computer now completely unusable. Help!

My daughter's computer did an update last night and now on boot up it goes into a cycle of Windows Explorer crashing and restarting. It has rendered everything unusable. I can't even get into settings to revert back to previous version as explorer just keeps on rebooting and no apps will open. Help! Has anyone got a fix?

:)

 

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.

 

Windows 10 upgrade - flickering desktop - completely unusable

I upgraded my HP Pavilion p6 today from windows 7. When the machine restarted it gets to the desktop and just flashes rapidly. It's completely unusable - the windows button doesn't work - nothing.

I tried rebooting with the shift key held down as suggested on one of the threads (to enter 'safe mode' or whatever) and that did nothing; I can't see any way to get into safe mode since nothing at all functions on the desktop.

I'd be grateful for some help, as you've rendered my computer completely unusable.

 

Windows 10 upgrade problem, no input accepted

i've seen this when the stock USB drivers went kaput. Only ever seen it once - i used a PCI USB 2.0 card and connected the mouse and keyboard to that, and manually updated the USB 2/USB 3 drivers.