my graphics drivers stopped working whilst i was playing a game, i restarted my computer and it appeared the drivers had somehow become corrupt (flickering green, red and orange blank screens). I tried uninstalling and reinstalling the drivers, even tried resetting my windows installation with no luck. My system is fine with the graphics card connected until I try and install the drivers for it, the installation gets so far then the various coloured screens come back and the PC restarts. Is this a hardware problem? Any way to fix? Thanks