You can check the power supply on your PC by removing the side panel of its case. If you bought a prebuilt PC, you can also likely check the power supply in the computer's manual or by contacting the ...

that's an at power supply. i'll let the c&cf guys explain the rest (since this thread will be there in about a minute).

1] Does the PSU fan spin on startup? Some users reported that their Power Supply Unit fan spins on startup but stops after some time. Others reported that the PSU fan does not spin even on startup.

OK, someone dropped off an old, and I mean old, computer. 486SX I think. He said he thought the PSU was bad. I know that I can ground the PSON and use a 5v LED on the PSOK-Ground to check an ATX PSU, ...