Computer shut's down

[MIXEDD]

Hello guys. I have problem. When I turn off my computer and I plug off the PSU cable and plug it again, my computer turns on by it's self and turn's off in a second. This is happening everytime I unplug my PSU cable and plug it again. I was wondering does anybody know's any good suggestions? I like to vacuum my PC from dust every month and my PC get's a stress like that every month. The Computer works fine with no crashes or other problems. Could someone give me some good suggestions please?

THANK YOU.
Good luck.

 

[Route44]

Please explain what you mean by "I unplug my PSU cable and plug it again." Why do you need to do this?

 

[MIXEDD]

I mean that I unplug the cable FROM the PSU, vacuum PC and then when I plug all the cables into the PC it turns on by itself and turns off. When I push the power button it turns On normally.

Sorry for english.

 

[Route44]

Can you test that power supply with a digital multimeter?

By the way, your English is actually quite good.

 

[MIXEDD]

Okay I will try my best when I have some time, THANK YOU!