GPU fans spin for a few seconds then stop

Posted by PandaSlap007@reddit | buildapc | View on Reddit | 7 comments

This is my first time building a PC and I was having some problems with getting a boot screen. When powering on the PC: the psu never spins. The GPU fans start spinning but then slows to a stop after 5 seconds. The cooler fan stays spinning the whole time. Nothing gets displaying on the monitor. Here is the parts list.

CPU- AMD Ryzen 7 5700x CPU cooler- NH-L9a-AM4 Motherboard- B550i Aorus Pro AX GPU- RTX 3060 OC 12 GB RAM-Corsair Vengeance LPC 32G Memory- Acer FA100 Power supply-Lian Li SP850

It’s not the cables (I used to different sets) When trying another pc’s 1070 GPU, all the fans start working but nothing was still displaying on the monitor.

Please help