Gtx 470 no signal...

1853th

Honorable
Mar 10, 2013
1
0
10,510
Hello everyone.
I just change my case and i transfer anything to my new one. the problem is that pc starts normally booting to windows but i have no singal to my screen from my gtx 470.. i change the card to my hd 6850 and everything works fine! my power supply is touphpower 750 w thermaltake and my mother board is ga p55m ud2 gigabyte. i cange bios i dissconnect all divices and still same problem .. before changing the case my gtx was working fine..