6gig ram video drivers not detected

Ok need alittle or alot of help. Today I added 4gigs to my system to the 2gigs I already had. For some odd reason if I have all 6gigs in I get ATI video drivers not detected. If I use just the 2gigs all is fine or if I use the 4gig kit all is fine. I tried upping the MCH voltage to 1.30 then to 1.35 with no luck. Mobo is an Abit AB9 QuadGT, video card is a Sapphire HD2600XT.

Issue fixed uninstalled the video drivers and installed Catalyst 8.11.

Neat.

I have just learned that some TV tuners have problems with 4GB or more of ram in system, must be the same "glitch" that caused your problem.