if it's the motherboard you wont it to boot up at all. if it's the hard drive it'll boot up and go through the memory check and you'll see a lot of stuff on the monitor till it tries to load the Operating System. at that point it'll tell you it can't find the OS.
If it's the Motherboard and not the Hard drive, you can take the hard drive out and put it in another computer.
and and FYI for all computer illeterate people DO NOT take your stuff to the Geek Squad, they are a bunch of overpriced idiots that can't do a whole lot or don't know how to. Find a nice little local computer shop and take it in there. They'll charge you less and they'll know what their doing (most of the time).











