Power supply will not turn on, thinking PS, please help

Ill just tell you what happened. I got home from class needing to get on the net but it wasnt working, a roomate had accidentally unplugged it so I plugged it back in. It still wouldnt connect so I restarted, however the screen stayed black. I opened up the case and found that my grafix card was super hot and the fan wasnt running so I took it apart and oiled up the bearing. I figured that dust had soaked up all the oil and jammed it up. After the oiling it spun fine. I put it back in and turned it on but the monitor stayed black, then I remembered that I didnt even plug the card back in which I have done before with no resulting problems. So I tried to turn off the computer so I could plug the card back in but it wouldnt turn off so I reached around and turned off the power supply using the switch. After I plugged it in and tried to turn the computer back on nothing happened except for the LED on the case flickered the next two times I tried turning it on. Now it does nothing. I didnt smell anything burning, the capacitors on the mobo look fine, power supply switch was in the right position and the outlet and power strip are fine. All I can think of is that the power supply is messed up.

I bought the power supply last march so its not even a year old. It is an FSP Group 400 watt.

What do you fellas think?

Try another PSU and if that's it, RMA the other one if it's only a year old, should be under warranty. If it's not the PSU, check the RAM but sound like the RMA. Recently had to RMA a new Antec PUS so it's always possible it's a bad one

Thanks, whats RMA?