Ripjaws Z with Gigabyte GA-Z77-D3H won't post

[Cortada]

Gigabyte GA-Z77-D3H rev 1.1
Intel I7 3770
F3-12800CL10Q-32gbzl DDR3 1600 CL 10-10-10-30 1.5V (4 x 8 GB)
Windows 7 Home Premium 64 bit

My trusty Asrock Z77 Extreme4 mb died a few weeks ago, and I took a chance on a refurb
GA-Z77-D3H. Problem is, it will not boot with my Ripjaws Z ram.

I got a dozen or so short beeps, followed by a reboot with rinse and repeat.

Fortunately, I had a couple sticks of 4GB HyperX Fury DDR3, which booted, establishing that the mb was functional.

However, I sure would like to use my real ram, as before.

The GA-Z77-D3H came with the most recent bios, and I see that the timings it is using with the HyperX are 10-10-10-30.

I can't find anything so far re compatibility, so am at a loss. I see that the bios has many mysterious expert settings.

Anyone have any suggestions? Thanks

[GSKILL TECH]

Have you tried one module at a time? Check to see if a module may be defective and causing a problem.

[Cortada]

Thanks for the suggestion. I did try a little swapping, but not methodically. It didn't occur to me that the original mb AND some ram might fail simultaneously. Anyway, per your advice I found that 2 sticks will boot and 2 give me the endless short beeps. So now I am at least up to 16 GB with half my original ram. I am going to re-assemble that 2nd computer that held the HyperX 2X4 GB and see how it responds to the 2 apparently bad Ripjaws sticks.

[Cortada]

Ok, I tried the 2 modules in question on the other computer and it booted no problem, Then I went back to the GA-Z77 and same problem no matter which pair of slots were tried.
Is this highly unusual, or known to happen on occasion?

[GSKILL TECH]

Did you check if they run at full speed and they are stable under load? If the memory works fine the issue may lie elsewhere.