Quoted from monkfe:Ok Gents, joined the club unexpectedly today. machine is in great shape, however when I got it home its now stuck on a boot screen of sorts...the bottom of the screen says to press f2 or something to that effect...Where to look first here....everything at the rear of the bottom box is connected ..also which software update, I see several I was going to go with the full 7.04...thanks...seller said he never updated the machine and he purchased it new.....
Dead battery on the computer.
Run to WalMart and buy a new CR2430 (need to verify that) and put it on the motherboard where the old one is.
You'll need a keyboard plugged into the USB port to get into the BIOS to change the setting so it'll boot past whatever errors you are getting.