I am looking at at Dell Optiplex GX150 that I was told would just randomly shut off while in use. When I started to look at it I was able to get it to boot and get to Windows desktop. I shut down the machine to look at the internal configuration, since then I haven't been able to get the machine to do anything. When the power button is pressed certain items internally can be heard starting, but the power light stays a solid amber color and the monitor has nothing displayed. I think the power supply might have just finally crapped out on it, just seeing if anyone had any other ideas.