Lost 4Gb memory

Layback: Would this be possible if what you said is the case?

CPUZ says there are 12GB but windows only see 8GB

Interesting, thanks for the clarification.

Layback Bear said:

I have had it happen on a Asus P6X58D-E with CPUZ seeing all the ram and Windows 7 not seeing all the ram.

I don't know how or why this happens.
They might get their reading using a different method but I don't know what those methods are.
Most important is what Windows 7 sees and can use.

Hi that's interesting what you say about Asus motherboard as my motherboard is in fact an Asus P6T SE

Layback Bear said:

Motherboards are way to complicated for me to understand but I do remember the time I spent trying to figure out the problem when I had such a problem.

The problem that took me the longest to figure out was the cpu cooler. After doing lot of research I tired loosing the cpu cooler mounting screws and reboot. After a couple of times of doing this my ram came back.

It was the two closes ram slot to the cpu. The only thing I can think of is the cooler mounting was to tight warping the motherboard ever so slightly so the two ram slots would not allow proper ram fitting. Temps stayed the same after backing off the mounting screws.

Thanks for the info it was the two slots nearest the cpu that was the problem with my ram.