I just bought this HP Pavillion ZV5000, I knew there was trouble with it, but didnt know what, so here is whats happening, I turn it on, I can hear the HDD spin up, then it stops, all power lights stay on, then after about 4-5 seconds it spins up again, but I get nothing on my screen, no post at all, I've also tried using a regular monitor hooked into the back, still nothing, I've changed the RAM with known GOOD RAM, still getting the same result, anyone have any Ideas?