Windows 10: Unable to upgrade from windows8.1 to windows 10

Hi, I am using lenovo G510 laptop with windows 8.1 as current OS. Yesterday, I tried to upgrade to windows 10 using MCT but after it started to install updates of windows10 suddenly an popup displayed with "Windows 10 update failed".Need your help here, as i could not able to upgrade.

:)

 

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.

 

Anyone can upgrade to Windows 8 Pro for $14.99.

There are two upgrades for Windows8. The $40 offer which DOES not require a key for prior version of Windows and then there is the $14.99 version for recently new purchasers of a Win7 box WHICH requires in step 2 to enter your Windows7 key.

 

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.