how to revert back to windows 8.1

[Peter Ezer Benjudah Pineda]

Can anyone help me, I accidentally deleted my system back up for windows 8.1, because of my antivirus program, now i can't revert back to windows 8.1 form windows 10, those anyone faced this kind of problem and have a solution?

Because of my antivirus when cleaning it accidentally deleted my system back up for windows 8.1

my laptop says we're sorry but we cant revert to your old windows because the neccesary files we're deleted

 

[gpobernardo]

Then, it's unfortunate that it was deleted. You could try to recover those deleted files using a file recovery program, but chances are you won't recover ALL of them - even recovering 99.99% of the files is NOT enough as that would translate to a corrupt system.

So, technically, you can't revert back to how your PC was before you upgraded (because the files were deleted). You're best option may be to re-acquire the installer of Windows 8.1 that came with your PC... but using that will erase all your personal files.