I bought mine from Best Buy about 2 years ago, and had nothing but fucking problems with it. It's an HP, and I've replaced the hard drive twice, had it in the repair shop @ BB 3 times, and it was still giving me problems. Wouldn't start, wouldn't stay on, freezing, etc...I figured out after a few months that if I hit the son of a bitch enough it would eventually start. So last week I got mad and opened it up, and since I don't have any knowledge of the inner workings of this shit, I just started fiddling with everything in there. I thought one of the connections felt a little loose, so I unplugged it and plugged it in tight, and it's been great since.
Fucking Best Buy's Geek Squad is about to get murked.