Computer will not boot after installing new cpu cooler

Solution
It won't boot, but does it power up or POST? Only 2 cables need to be connected: the 24 pin cable and the CPU ATX 4-pin or 8-pin cable. The FP cables are not required; you can always temporarily short the power pins to power up.
Is the fan wire properly plugged into the motherboard cpu fan header?
Is the fan spinning sufficiently high enough? Perhaps 500+rpm.
Some motherboards will not boot without a fan spinning sufficiently high.

In the install process has a cable been dislodged a bit?
Look at the main 24 pin or aux 4/8 pin power leads.
 

emearldconrad645

Prominent
Aug 14, 2017
13
0
510

Well here's the problem, the new cooler I have installed is a semi-passive so the fan only starts spinning if the temperature gets high.

 

emearldconrad645

Prominent
Aug 14, 2017
13
0
510

Well, I did that but it didn't boot also. I had to disconnect the motherboard inorder to install a spacer under the motherboard so the cooler can be installed into the 1151 (I think) socket so I may have messed up at reconnecting the cables.