Hi, I have a non-working gateway laptop m-6335. There is no sound or video coming from it. I am not sure on what to do, I tried connecting it to external monitors but nothing. I'm not sure if it's a mother board problem or something, please, if there is any solution to this, let me know, because when it was working, it had some incredible stability. This computer power's on, and the power light and everything comes up, but it is only this problem. Thank you!