Can I safely have 2 x 1 GB sticks and 2 x 2 GB sticks? All specs are the same, but they are single and dual rank respcectively. The system (and BIOS) sees them. I am wondering because I have a chronic problem with the OS not being able to install USB devices -- mass storage. I have done exhaustive software checks and even changed out the motherboard and installed both Win Vista (32 bit) and Win 7 Pro (64 bit) with no luck yet.
thanks
thanks