I mentioned earlier that I received a Microsoft Surface 2... Excellent little machine, but Windows 8.1 took some practice to get the hang of. Then, yesterday, the touch screen stopped working and it would take forever to shut down or boot up. Unhappy, I did a system refresh and reflashed the BIOS (can be done very simply, actually. Built in BIOS repair function). Fixed... Still, I've lost confidence in this unit. So, I contacted Microsoft and a replacement is on the way. I'll do a system restore on the old unit... Don't want to send it back with anything on it but the factory installed software.