Hyper-V is not available on on/off windows feature. I have tried every tutorials on the internet and none of them works. I was searching for the copy of Hyper-v but it couldn't be found. There was details it could restored from RSAT and some management tool. Tried RSAT but it had undefined behavior and done nothing other than trying to do windows update. There was also comments on some pages saying that since windows 7 is no longer supported by Microsoft so there's no way to get the architecture. When I checked bios menu I couldn't see any options regarding virtualization config and it has very little options.