System Restore is found @ Start-Program-Acceserios-System Tools-System restore

See what dates you can restore to, if the only dates are after the virsu infection your still fucked.If its before, restore and everything should be str8.
Safe Mode....I done it a few times but I dont know what button you press....I think mine was F8 but idk and it chnges for every computer.If you look at the black screen whens shits loadin up it will says 'Open in Safe Mode.....' and then the one you have to press