How to fix a problem with a new video card?

Question

Video cards

The PC does not turn on with a new video card
I bought a zotac 2060 twin fan to replace the gtx 1030 plug. When you turn it on with a new video card, the computer immediately turns off without showing anything on the screen (the speaker is silent and the post card does not have time). After I pull it out, connecting it to the processor video, the computer will immediately pass out again 2-3 times and then everything will work fine. The old video card plows with a bang.
If, when the computer with processor video is turned on, you connect a video card and additional power, the turntables start working. And after rebooting from the OS, the video card starts working properly passing all the stress tests.
On an old PC on socket 775 (with a new PSU), everything starts
. What could be the reason?
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