Question PC not starting

Apr 4, 2019
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When I press the power button, the pc doesn’t doesn’t boot. It turns on for half a second with about half a fan rotation - shown here
Specs:
Ryzen 5 1600
GTX 1070
16GB DRR4 @ 3200MHz
EVGA 750 GQ 750w psu
 
Apr 4, 2019
19
0
10
No RAM, no case fans, no storage drives, USB, audio, or front panel wires. Only CPU, CPU cooler, 24 and 8 pin power cables. Start the board by shorting the 2 pins corresponding to the case power button and see if the CPU fan does continuously spin.
Thanks, the fans did spin after I tired that. But I also started adding a few mor components back in, and it seems that the only time it happens is when the ram is in. If there’s not ram everything works fine