About two days ago, I was using my computer like normal when it suddenly shut off. I went to turn it back on and... nothing. The power supply light wasn't on and the power button wasn't lighting up. I unplugged the power supply and waited a few seconds, thinking something had caused a surge. After the light on the power supply flashed I plugged it back in. Power supply light lit up, and I thought all was right with the world.
I hit the power button, the light flashed and then... went dead, along with the power supply. I'm not sure if the fault here is with the power supply or the motherboard... It's not a problem with overheating cause I went to take a shower shortly after and there was a good 30 minutes for the power supply (which was indeed warm) to cool down. However I did the unplug reset trick again and still nothing. I have another power supply I got for a Christmas gift (thought a video card I got at the same time would require a beefier unit.) but I tried it at around the time I got it but the computer wouldn't even boot up; the power light would just keep blinking with nothing else happening. I imagine it's cause I was using one half of a 4x2 pin connector for the CPU power connector (which is a 2x2 on my board)?
If it means anything I uhhh... accidentally touched something I probably shouldn't have and caused a bit of smoke at around the same time I tried connecting the coolmax power supply, but nothing bad seemed to immediately happen and the computer worked fine for the next few years until now (this was around 2013, I think.)
If it means anything (again), the inside of my computer is also really dusty. But that's explained simply by me not getting serious about asking my folks for compressed air.