Graphics card is not detected...

[Guest]

Ok so, I have a laptop that has 3 graphics cards:
One NVIDIA GeForce 9400M G for when it runs on the battery and two NVIDIA GeForce GTX 260M working with SLI for when the AC is plugged in.

Suddenly, about a week ago, the 260Ms simply dissappeared. It's like my computer doesn't detect them anymore. I looked in the Hardware Manager but it only lists the 9400M. I also tried getting a driver website to detect them but it didn't work either. What could be the problem?

 

[jay2tall]

What brand laptop is it? Is it still under warranty? I would contact them first.

If the video cards are even detected they would still be listed as graphics adapters under device manager. Is there a way to reset the BIOS? maybe something was fouled up on that ends. Is there a way to look in the BIOS if it detects these cards?