Dual Monitor Artifacts And BSOD

mlojt

Distinguished
Jun 23, 2011
3
0
18,510
I've just bought my 2nd monitor and plugged it in. Everything worked fine for a whole day but after I rebooted (Win7 installed 11 updates) plugging 2nd monitor in causes graphical artifacts, "display driver stopped responding and has successfully recovered" for a few times and eventually bsod or black screen when any 3D games are run (even Firefox dammit). It doesn't matter whether I plug it in before booting windows or after. When I plug one monitor out and restart it works as usual. Any ideas on what could be the problem?

Catalyst 11.6
GPU ATI HD5770
Windows 7 64-bit Professional
CPU AMD Phenom II X4 925
450 Watt power supply, if that is important