Question Everything work in ny pc but no display?

aLi_112

Reputable
Jan 9, 2016
4
0
4,510
So my pc works fine today i decided to open and clean it as it was dusty, so i did that i only removed the cpu fan cause it was the most dusty part and put it back in same place. Now when i turn on my pc all my fans start turning i have Led lights on Gpu and motherborad, but the GPU fans will stop spinning after 10 sec and there is no display on monitor. Everything spins but gpu fans even tho it lights up and no display nothing.
Some people said it might be power supply but I've been using this pc for 3 years now and it worked just 1h ago any help?