So i decided to upgrade my GPU.
I had gtx 550Ti and changed it with GTX 1070.
before i removed GPU everything was ok.
after i changed power supply and gpu image is completely black.
i tried removing cpu,rams,plugged and unplugged all power chords even removed motherboard battery. then i decided to plugged in cpu integrated card(i7 2600) it didnt help.
motherboard - Jetway HI09
any suggestions what i can do?