PC is on, but it's not displayed on my monitor?
I turned my PC on and it's running, but it's not displayed on my monitor. I tried a different monitor, a different cable for displaying, and different power cords, but its still not working. I noticed that even though my keyboard is plugged in, it doesn't seem to be working. (pressed the caps lock and num lock buttons to see if they are on.) my mouse however is glowing red so i think that still functions. When I turn off the computer and turn it back on, sometimes it just turns off immediately. My friend thinks that my computers power supply is messed up. If thats the case, then how do I solve this problem?