When I received my PC and started it for the first time, I received error messages 161 - Real Time Clock Power Loss and 162 - System Options Not Set. I tried F1 to boot anyway multiple times until it finally did, but after a power loss it did the same thing. StallionTEK is the seller and their is no email contact and the support phone number only disconnects when you select support options. The keyboard that came with the PC has TekRefurbs which is another seller on Amazon, and they responded to an email, but said they were unable to assist. Going to report this to Amazon. Name switching with internet sells usually isn't good.