Question Using two PSUs - - second one turns off when first one is turned on?

Oct 16, 2019
1
0
10
0
Can someone help me. Im using 2 power supply, the first one is used to power my motherboard, Hdd, etc. and the second one is just dedicated to my video card. Now here is the problem, when I turn on my AVR, my second power supply turns on, but when i turn on my first power supply, the second PSU magically turn off.
 

ASK THE COMMUNITY