I have been having this problem on and off for over a year now. Whenever I have an ethernet cable connected to my computer on startup, the graphics driver does not load. This causes everything to be laggy, and I am unable to even watch a video. When there is no ethernet connection, it loads fine and I can connect ethernet after it finishes booting. It used to happen regardless of whether it was connected to LAN.
I've fixed it before by updating and/or downgrading graphics drivers, but the problem keeps coming back. Another thing that might happen is that SLI becomes completely disabled.
Any help would be greatly appreciated.
Windows 7 x64 Ultimate
2 GTX 285's in SLI
Asus P6T vanilla mobo
6gb ddr3 Dominator GT
950 watt corsair psu
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