Need memory recommendations for Asus P7P55D... current memory seems unstable

[Jumpem]

I get occassional crashes to a blank screen (less of these after switching from 8GB to 4GB).

I get other errors such as superfetch stopped working, windows update stopped working, host process stopped working, microsoft software protection service stopped working, etc. It seems Windows 7 gets corrupted and I keep having to reinstall every few days.

This is the RAM I have now: http://www.newegg.com/Product/Produc...82E16820231276. G.Skill DDR3 1333 Ripjaws CL7.

I have tried it at auto settings (CL9), and with XMP (CL7 and voltage fixed at 1.5v).

Any recommendations? If I can't find settings that fix it, I want to try a different brand of RAM. Thanks for any help.

[Makubex_GB]

Run memtest86+ to check if the memory is defective. The first pair of G.Skill Ripjaws DDR3-2000 I got had a bad stick. The second pair, the one I'm currently running on my P7P55D Pro, runs perfectly.

[Jumpem]

Run memtest86+ to check if the memory is defective. The first pair of G.Skill Ripjaws DDR3-2000 I got had a bad stick. The second pair, the one I'm currently running on my P7P55D Pro, runs perfectly.

Memtest has run for 20 hours without an issue. I have read of thers having issues with their RAM even if it passes memtest.