help pls diagnosing ram problem AMD fm2

pegotico

Honorable
Sep 27, 2013
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Hi
I need help with diagnosing ram problem in my htpc
A10 6700
GA-F2A88XN-WIFI (LATEST bios F4 installed)
http://www.gigabyte.us/products/product-page.aspx?pid=4745#ov
(CML8GX3M2A2133C11B) 2133, 11-11-11-27, 1.5
http://www.corsair.com/en/vengeance-low-profile-blue-8gb-dual-channel-ddr3-memory-kit-cml8gx3m2a2133c11b

The ram is perfect as I tested it with my other rig (just enabling XMP) no errors whatsoever

The problem is that if I enable XMP profile on bios Windows 8.1 64 bit only sees 4 gig. As soon as i disable XMP which defaults memory to 1333, windows recognises 8 gig of ram.

I have tried manually entering speed,primary timings, and increasing Vdimm (even with XMP profile enabled), also raised Vnb.

Im about to loose hope!!!
 

pegotico

Honorable
Sep 27, 2013
38
0
10,540

boot failure, do you think there can be a hardware problem? cpu or mobo?

 

pegotico

Honorable
Sep 27, 2013
38
0
10,540
yep at 1333, 9-9-9-24 they work perfectly, but then..... at my other rig they do work at 2133