Question USB ports and HDMI/ Displayport not working ?

[MaxDorLachs]

So, my friend asked me to build his pc with him bc i've already build a few pcs, and everything seems to be working, lights(ram, case, fans) are on, fans are spining, the ez debug led has a white light on cpu and i think that's how it is supposed to be. But the problem is that when we connect stuff like the keyboard to the usb (2.0 and 3.0) it doesn't light up and when we connect hdmi or display port from the gpu to the monitor we get nothing, not even the "No Signal" screen. Does any1 know what the problem may be?
Specs:
Old gtx 960
Ryzen 5 3600
Crucial balistics 2x 8 gb
Motherboard, Msi b450 pro-vdh max
Case, Inter-Tech GEH X-608
M.2 ssd 500 gb

 

[rgd1101]

brand and model of the psu?

 

[MaxDorLachs]

brand and model of the psu?

be quiet! Pure Power 11 500W 80+ Gold

 

[zaccsi]

just try to take out the cpu and then put it in again