I'm using an Alienware M17x R4 with an Nvidia GeForce GTX 660m.
I've been using this laptop for about 3 months now and everything has been running fine. Yesterday, I was playing Skyrim testing out a new mod from nexusmods. I've read on the description and comments and there were no problems associated with the mod. While I was using it a received a BSOD. When I restarted the computer my resolution was reset. I right clicked on the desktop and the options for my Nvidia control panel were gone along with the other options for the Intel Graphics control panel.
After a while my first display adapter came back which was the Intel(R) HD Graphics 4000. I looked up as much as I could about the problem and it was usually associated with the display adapters being reverted to something like Standard VGA Adapter. This applied to the Intel graphics, but that was all. It was as if my graphics card vanished and I can't find it under device manager. When I try installing/reinstalling the Nvidia drivers it says that there is no Nvidia hardware. I've tried waiting a couple of hours with the laptop shut down, finding it in safemode, and searched for even more solutions. I can't seemed to find any. The last thing I did was check the BIOS and it said that the Discrete Graphics Card was not detected.
If anyone could help me it would be much appreciated.