I have a Dell Dimension 9150 running Win 7 Ult. The machine has 4 memory slots but seems to have a 4 gig memory limit. When I installed 4 2 gig strips the bios recognizes all 8 gigs but windows wont boot.
Either pair when installed separately in slots 0 & 1 will work. The machine works fine with 4 1 gig strips.
Any suggestions ???