big problem with graphics card and monitor

lofthouse1982

Distinguished
Mar 1, 2012
259
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Hi all, I have a Biostar TA690G AM2 motherboard and a geforce gts 450 graphics card.

My problem is that the computer has a question mark next to the graphics card in device manager. And my computer won't recognise my lg monitor. Before I had no problems and was able to view at 1680x1050 and my graphics card and monitor had no problems. I have reinstalled windows 7 64 and installed all drivers for graphics card and reset the bios! Nothing so far is working and I'm getting frustrated. Maybe it's a bios thing but I have tried turning off. On board graphics and still it won't detect them.

Any help would be great