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ASRock Z77 Pro 4 RAM Not recognized?

Last response: in Motherboards
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September 16, 2012 4:36:46 AM

Hey Everyone! Sorry For me being a newbie here but I have an Odd problem. I installed identical 4 sticks of Patriot Viper 4GB 1600 RAM on my ASRock Z77 Pro 4 mobo. I can see the RAM in the UEFI "System Browser" but only A2 and B2 are recognizing the RAM as even being "installed" So It reads as I have 8156MB RAM while I should have 16384MB RAM. Any other info can be provided if it is releveant to the solution!

My Rig:
Ivy Bridge Intel i5 3570K 4.0GHz
Patriot Viper 16GB 1600Mhz RAM ( I hope soon!)
ASRock Z77 Pro4
September 16, 2012 4:25:52 PM

Bump!
Please guys I need some help! I can't be the only person out there with this problem!
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a c 216 V Motherboard
September 16, 2012 6:49:32 PM

Does each DIMM work by itself?

Does each pair (i.e. two 4GB DIMMs) work by themselves?

Do three DIMMs get recognized?
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September 17, 2012 8:41:19 PM

Yes. When I switch the Inactive RAM out of it's DIMM slot it works in the A2,B2 Slots. But the A1,B2 Slots seem to be broke? And I haven't tried 3 DIMM's yet. I will try that now and post the results.
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September 17, 2012 11:59:21 PM

Okay It will work in A1 and B1. When a third RAM stick is installed it reverts to an odd setup of B2,A1 recognized.
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September 25, 2012 10:00:48 PM

Finally Resolved. I took it to my local microcenter and they replaced the motherboard for me. The Motherboard had a short on the RAM slots. Thanks for ALL the help Tom's Hardware. Geez. I couldn't have done it without the help of these so generous members.
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Best solution

a c 216 V Motherboard
September 25, 2012 10:06:14 PM

Happy to hear you have it resolved.

With weird memory slot behavior like that I would have taken it back to the vendor for exchange too.
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September 25, 2012 10:16:07 PM

Best answer selected by Ivy3570K.
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