My computer froze, ok fine, it happens, quite often on 8.1, never on 8. I restarted. Now my %appdata% folder is inaccessible, can't be detected by windows. Apps that start on login no longer autostart. My start menu and all entries are gone. I tried system restore, didn't work. I can't use a windows ISO from online, because I am Dell OEM activated. Apps that needed access to %appdata% no longer work. I really need to find a solution to this problem that does not involve sending my computer to Dell for repair, mainly because I have 1.5 BTC and other crypto currencies, I seriously can't lose.