Computer won't start after cleaning cpu fan

Tanos3

Commendable
Apr 17, 2016
2
0
1,510
Hello!
So I removed the heatsink in order to clean the fan, but when I put it back in, my computer wouldn't start.
The cpu's fan and the fan in the front of the computer were working.
The fans of the videocard were NOT working.
The lights of the computer turned on.
There was no loud beep or anything.
I could turn on the computer using the power button but I couldn't turn it off nor restart it with it, only by disconnecting the power supply was I able to turn off the computer.
I woudl greatly appreciate if someone could help me!
 
Solution
1) Remove the GPU, plug monitor cable to mobo's onboard output.
2) When you start the PC can you see something on the screen???