Hello, people My original M17x R2 set is dual gtx285m with SLI Windows 7 64-bit Recently, I bought a gtx675m. I inserted gtx675m into the primary graphics card slot (left). And I left my old gtx285m in the secondary graphics card slot (right). (SLI doesn't work anymore now for sure) I turned on my laptop. Installed the newest driver (310.90) and this unlocked BIOS A10 It didn't recognize the new gtx675m as usual so new gtx675m wouldn't work. My friend told me to modify nvcv.inf in C:\NVIDIA\DisplayDriver\310.90\Win8_WinVista_Win7_64\International\Display.Driver\ Here is a sample. Then I ran the setup again to reinstall the driver. After I reboot my laptop, it recognizes the new gtx675m now and it is functional. I made that secondary graphic card gtx285m to run PhysX. I have checked GPU-Z, nvidia inspector... They all say the new gtx675m and the secondary gtx285m are both functional. I have run Battlefield 3 and turned all graphic settings to very high. It runs perfectly at 60FPS, smoother than my old gtx285m SLI set. The problem is all 3 fans keep spinning like hell right after I press the power bottom. It doesn't care about the temperature...spins 100% even at 30/40°C I tried HWiNO64...it works, all fans now runs normally (will speed up if temperature get higher). BUT it works ONLY IF I get into Windows and run HWiNO64. All fans start spinning 100% if I close HWiNO64. Seems like bios refuses to recognize any graphics card other than gtx285m. I tried a lower graphics card gtx260m. Got the same problem. Is there any solution? Sorry for bad English because English is not my first language.