I have two 8800 GT's in SLI; they work fine with driver version 169.25. However, I cannot install any of the later drivers and still be able to use SLI. Whenever I install a new driver and then enable SLI, my screen goes blank with a blinking underscore at the top-left corner. I already tried uninstalling all of the drivers on both video cards and then installing the latest one (180.48), but it doesn't work. I've heard this is a pretty common problem with 8800 GT's. I can always revert back to the oldest drivers to play in SLI, but I'd really like to have the latest drivers installed. Thanks for any assistance.