I recently installed a few games on my Dell M50 laptop only to have them fail to run, to crash out or to just completely garble the display. So, I made sure I was running the latest Dell drivers for graphics, bios, etc. Still no good. I keep reading that it is recommended that I install the Dell versions of drivers, rather than go for the Nvidia drivers. I decided to go against this advice and guess what? It all works now. The Nvidia drivers were almost a year more up-to-date than the Dell. I'm now happy, but I'm waiting for something in my laptop to melt down in recompense for breaking the "dell drivers only" law. We'll see.