Help with videshi, it works, then no

In General the problem such, is the gtx 660 2gb from gigabyte. Got from a friend as not working. Decided to test and direct surprise. Put in the motherboard on the socket ам3, in the end a black screen. Put in the motherboard 775 socket, the picture appears after 20-30 seconds. Stuck in the mother of 1155 and lo and behold, works stably, the image at once, the driver are put, the test passes. That's how it is. Suddenly someone had a similar
P. S the BIOS sewed different