When I try to run more than 1 monitor (NVS 295 video cards), I'm getting a BSOD with the mention of "nvlddmkm.sys" I looked it up on the web.. others have had same problem. A fix to recreate this file was offered... I tried it, but no joy. The file is installed when an Nvidia driver is installed and is removed when the driver is uninstalled. I tried the current 306.79 version and an older, 295.73... same result. Any of you see this before and know the fix? TIA PS I pulled the video cards from my XP machine and they were working just fine... seems to be an Nvidia problem with this file in W7... ??