Bought a computer on Craigslist, guy let me take it home without resetting it because he wasn't sure how and trusted me to get it done. Go to reset in advanced boot options and get the classic "There was a problem resetting your PC". Normally I'd run SFC or roll it back to a restore point but I can't do that without this guy's login info. I already whipped up a bootable USB but I'm not sure if or what I can do with it. Any help would be greatly appreciated!