How to test a pc power drive

[michelmor]

Hello,
my desktop wont turn on, like no power. it used to work can you help me?

 

[edgewood112358]

There is an enormous host of things that could be wrong with your computer, and you gave us no details... it could be your PSU died. Does your computer do anything when you push the power button? If it does absolutely nothing, that seems indicative to me of either a broken PSU or CPU (PSU is far more likely). If it tries to load the BIOS, does any sort of beeps, lights, or fans when you try to turn it on then it's an entirely different can of worms.