Just a few hours before the hot demo, NVIDIA released ForceWare 163.44 for Windows XP and Windows Vista, bringing improved compatibility for BioShock and PureVideo HD decode acceleration for GeForce 8600, 8500 and 8400 series GPUs (for Windows XP). These are beta drivers, but in case you wish to play the BioShock demo without any problems, then we'd recommend you install them, as we've heard there's a nasty problem on some configurations (with old drivers), which may cause the demo to crash. We've also added a list with the supported video cards, so be sure you check it before downloading the driver you need. You'll probably be happy to find out these drivers also fix the SLI BSOD problem.