Asrock x99 bad ram slot

[TheKaptain]

Recently I got a new case for my pc and a few new fans. After moving everything to the new case, I noticed my PC is only recognizing 3 out my 4 sticks of ram. Last night I did some troubleshooting, moving sticks around and whatnot, Slot D1 does not recognize any of my 4 sticks.

I tried moving them to the other 4 slots (A2, B2, C2, D2) and my pc would not post. After reading manual, it says I have to put first 4 sticks into the 1 slots.

What can I do to work around this issue. Can I do 3 in the "1" slots and one stick in the "2" slots? Or two and two? Any advice is greatly appreciated.

Motherboard: Asrock x99 xtreme6

 

[jimmysmitty]

Did you check and see, just to make sure, that there is not a stand off hitting that DRAM slot causing it to not work?

For memory you can drop from quad to triple or even dual channel. For example use A1, B1 and C1 would drop to triple channel. If you do A1, B1, A2 and B2 it would drop to dual channel but should work in either case if the slot is actually bad.

 

[TheKaptain]

Did you check and see, just to make sure, that there is not a stand off hitting that DRAM slot causing it to not work?

For memory you can drop from quad to triple or even dual channel. For example use A1, B1 and C1 would drop to triple channel. If you do A1, B1, A2 and B2 it would drop to dual channel but should work in either case if the slot is actually bad.

I will check to see if there are any issues with a stand off. If that is not the case , and I were to run A1, B1, A2, and B2, in dual channel mode instead of having them all in quad channel, would I notice much of a performance impact in comparison to running them in quad channel? or even just the 3 sticks in triple channel?

 

[jimmysmitty]

For gaming and most normal user tasks you wont notice a ton of a performance hit. In a more memory intensive program you might but consumer desktops rarely use that much:

https://www.pcworld.com/article/2982965/components/quad-channel-ram-vs-dual-channel-ram-the-shocking-truth-about-their-performance.html

That review shows it pretty well.

 

[faalin]

Pull the heat sink off and reseat the processor, sometimes to much pressure on the cpu can move a pin to the wrong dot on the cpu. also if you did not remove the heat sink in the move just twisting the HS could have move the cpu in the socket.

 

[TheKaptain]

Not sure exactly what fixed it. Opened pc, looked at slots real close, no damage that I saw. Blew out all 8 slots, checked to see if any stand offs were touching, everything looked good.

Put in 2 sticks instead of 4 in slots c1 and d1, booted to bios and it recognizes both sticks. Put in other two sticks into a1 and b1, now running fine in quad channel.

Thanks for all the advice!

 

[jimmysmitty]

Could have been dust. Maybe when you moved the parts enough dust shifted and caused the connections to not be 100%.