Been having this problem for more than a year now. I will press the power button and the desktop sounds like it goes on, my dvd drives flash and all. The only thing is that the power button flashes orange/yellow instead of being green. Just like if it where on stand-by, the monitor also looks like its on stand-by (PLEASE don't tell me its the video card, I know its not that.). Now I might get lucky once or twice a day to get on it, meaning that I press the power button and it turns on normally and acts like nothing happened, but due to the hot weather here, I don't like to leave the computer running all day and we get to many suprise thunder storms, so I like to leave it unplugged when I am not on it. Anyways this is my Dell Dimension 5100 from my specs. I tried about half a year ago to figure this all out, but no results. I am trying to avoid going to the shop, I really don't have the money to waste if they won't have a answer for me. So I am just hoping maybe someone might know what is going on with this thing. Like I said it will work most days, but I will have to try like a million times turning it on and off till the power button turns green and I get a picture on my monitor. Hope someone out there can help me, if you need a video or photos, let me know, I can get them up for ya. Thanks so much.