Specs: core i7 965, 12gb ddr3, seasonic x-750 gold psu, gtx 580 + gtx 280 physx, sb x-fi pro, vista x64 sp2, directx june 2010. Everything stock clocks, incl. cards- nothing OC! vga drivers: 263.09 ,then 265.90 quadro modded inf. The gtx 280 was the main card until the 580 came. vga bios: gtx 580 70.10.12.00.01 gtx 280 62.00.0E.00.01 All benchmarks and the few games I got installed all run fine, no issues at all, vga full load temp -85c. The issue is that about once a week(!) I get display driver stopped responding and recovered error, after short freeze, only in 2d apps like full screen flash games(I disabled flash hw acceleration because of that), or watching a video in media player classic home cinema(not using HW decoding). After such crashes there are artifacts on the screen and reboot does not fix! only shutdown then turn on! this happened a few times in both vga drivers I mentioned. Not using driver sweeper as I didn't see the need to. Tried unplugging pc power(info from google) but not the psu pci-e power plugs yet. This didn't resolve this rare issue. So do I have a software problem like drivers, or do I need to take out the gtx 280 maybe? maybe some vga bios update or more up to date vga driver will fix this? BTW, this issue cannot be reproduced again, nor did it ever happen with the gtx 280 alone in the system. All seems fine until these rare 2d crashes(never in 3d) occur. What do you think?