If you haven't tried it already, update the video card driver. Though, the best next step is to take a look at the dump file. You will need a debugger tool. If you need help with it, feel free to send me that dump file, C:\Windows\Memory.dmp. I'll take a look at it and see if it leads to anything.
Every time your computer BSOD, it drops all that memory dump into a dump file. With the right tools, it can easily tell you what file or service it crashed on. If you wish to email me the dmp file, my email is firstname.lastname@example.org