|"I'm looking for Elitegroup K750M+ Version 7.5C"|
I believe you mean K7S0M+? And what do you mean their download does nothing? I was able to download the file with no problems at all...choose the European site for the fastest download.
If you insist that doesn't work, go to the SiS website & download the IGP graphics driver for the SiS740. While you're there, get the AGP (GART) driver. May as well get the SiS900 LAN driver too.