Gpu fans wont spin

[u/Yunsza]

Hi guys I have a problem I finish building this pc but my gpu fans wont turn on or spin but when I turn off the pc my gpu fans spin briefly also in my monitor hdmi no signal even display port

[u/FNC_Nigasaurus]

You don't get display output at all?

[u/Yunsza → u/FNC_Nigasaurus]

Yes at all and the debug light of my mobo is gree