Hi:
Thanks for the feedback.
I understand your frustration with Windows 10. BUT the issues you describe with your Windows 10 device are completely fixable by changing some settings. It will, however, be too confusing to troubleshoot two different computers in one topic.
I respectfully suggest sticking in this topic with the Windows 8.1 computer at hand, if you are determined to invest time and effort to fix this older machine running an obsolete, insecure, apparently corrupted OS.
BTW You did not answer the question – is the computer in this other topic the Win 7 computer, the Win 8.1 computer discussed here in this thread here and now, or the Win 10 computer?
https://www.bleepingcomputer.com/forums/t/781877/keyboard-not-working/
If it *IS* the same Windows 8.1 laptop we are discussing here in this thread, then you may be facing (impending) hardware failure, especially if it is > 5 or 6 years old. And it sounds as if the repair install did not work.
Trying to repair the OS if the hardware is failing may not succeed. But, as always, it’s entirely up to you.
PS I understand your favorable opinion of and comfort with Windows 7, too. BUT Win7 is an even more obsolete, insecure OS. At some point, we all must move on to newer hardware running a more modern, more secure Windows version (or move to Linux). Operating unpatched computers in today’s threat environment is quite risky. Doing so requires a significant level of computer expertise in order to minimize vulnerability and to have at least a rudimentary plan for disaster recovery. Without those, you face a real risk of data loss, financial loss and/or identity theft. But it is certainly your choice. I’ll dismount my soapbox and wish you well. Cheers and Good Luck!