Windows 10: Upgrade Windows 8.1 desktop to Windows 10

I have a ZT Systems i7 desktop running Windows 8.1 that performs beautifully - better than my i7 Windows 10 Dell laptop. However, I need to switch it to Windows 10. I missed the free upgrade opportunity, so I guess I need to buy a Windows 10 Key. I downloaded the ISO from Microsoft, but I do not see where I can buy a Key there and I'm not finding a reputable source to buy Windows 10 that would come with a key. The PC is not compatible with Windows 11, or I would go that route.I cloned the SSD so I would have two copies. I did attempt to run the upgrade on the Microsoft website, and the PC

:)

 

Unlocked Realtek HD Audio Drivers Windows 7 & 8 (With Dolby Digital Live and DTS Interactive)

DTS supported natively by Windows 8/8.1 and it should work on windows 10 too just DDL require to unlock your driver .

 

Windows 10 to be Free Upgrade for Windows 8.1 and Windows 7 Users

In what could be a fundamental shift in how Microsoft monetizes its flagship product, the Windows operating system, the company decided to offer its upcoming Windows 10 as a free upgrade for existing users of Windows 8.1 and Windows 7. This offer will be applicable only for the first year following Windows 10 launch (after which, Windows 8.1 and Windows 7 users will have to pay to upgrade to Windows 10). Windows 10 will see the return of the Start Menu, a productive Desktop environment, and cutting-edge new API features such as DirectX 12.





Source: The Verge

 

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.