Re: Geforece Go 7600 fan problem
Attached is the original (not modified to compile correctly) dsdt.dsl for my machine. At line 3943 you'll see a few hacks for Vista (OSYS 0x07D6). I'm nearly positive these hacks are what turn on the fan. My guess is that they found a better way to handle Vista (which hadn't been released at the time of the 2.4 BIOS) and so removed the hacks from newer BIOSes. Porting the hacks to the newer BIOS will probably work (but, I make no garauntees. It may also cause your machine to explode).