Monitor not getting input signal but mouse lights up

Acegoku12

Commendable
Jun 8, 2016
22
0
1,510
I just built my PC and it turns on, with everything from the mobo, the GPU, and the RAM lighting on however for some reason, when i plug my monitor in, it does not have an input signal. I tried using both HDMI on the GPU and the DVI on the I/O and neither are showing input. However, when I plug my mouse in, it lights up which really does confuse me. Maybe its too little power in the PSU? (It did take a while for the PSU to actually boot up)

Is there any way to fix this?
 

Acegoku12

Commendable
Jun 8, 2016
22
0
1,510


CPU: i5 8400
GPU: Gigabyte NVIDIA 1060 6 gb
Ram: 16gb corsair vengeance LED
Mobo: MSI z370 A pro
Storage: 1TB WD blue and Sandisk SSD
PSU: Seasonic focus plus gold 650W
Case: NZXT s340