So I just got home from being on the mainland for 2 weeks. Before I left, I shut down my computer and unplugged the power strip from the wall. When I got home, I plugged back in the power strip, and hit the power button on the computer. The lights come on but it doesn't do anything. I hold the power button to turn it off and then turn it back on. It starts to start up (the Gateway logo appears), but then the screen goes black and says "no signal" and that's as far as it goes. Tried turning it off several times and nothing. All I get is "no signal". I got it to start in safe mode a couple times, but then it won't start up again for 6-8 times turning it off. I know nothing about computers. The computer is about 6 mo old. What is wrong? motherboard?