hey I have a asus p5b with an e6600 and a evga 7900gt, when i turn on the computer it sometimes wont beep, or send a signal to the monitor, so you have to restart it, and this might happen 4 more times until it finally successfully boots. Also the computer sometimes crashes randomly, and if you leave it for like 4 hours then come back the screen is just a bunch of silver horizontal lines instead of windows. I RMA'd my ram and i just got it back today and nothing. What do you guys think it could be? I think it might be the video card but i am also thinking theres a chance it might be the motherboard.