Hey everyone, My computer worked fine until I UNPLUGGED it and went to turn it BACK on and nothing happens now. I am not sure if it is the power supply or whatever tells the power supply to turn on. How can I determine what my problem really is? Thanks! What happens when you try to turn it on?

Why did you unplug it?

Did you unplug it when it was powered down?Thanks for your reply, When I try to power it on the button clicks and that's it, no SOUNDS of a fan trying to turn or any sign of power. I shut down the system and then unplugged it so I could take my monitor from this computer to another one momentarily. When I PLUGGED it back in, nothing. I checked the cord on my other computer just to make sure that wasn't the problem and it powered up my other computer just fine. Thanks for your helpI would say it's a problem with the Power Supply Unit.

There was a way of testing it but I don't know how.Yeah, it does sound like the power supply. For future reference, there's no REASON to pull the power cord unless you are going to open the box.