RAM not detected dead?

[elisz]

hello,

i bought 2 x 8gb ram awhile ago and i put it on my rig. everything was working fine. I then put my old 2 x 4gb ram tuck away safely. but recently my friend had built a new pc. knowing he loves to have a lot of program on, i decided go give my 16gb ram installed in my rig as i don't even use 80% of it. when i put back my old ram, on the startup it gave me an error saying something like
"warning channel b has failed cpu memory test please remove and plug back again". is my ram dead? the other one works fine but the other one is not detected. i carefully removed the ram and put it back again and it just kept giving me the same warning. i can boot into os but with only 4 gb of ram. hopefully someone can shed some light into this. thank you

 

[Bryan Hatch]

If your RAM stick is in the right slot, then I would say so. On some MOBOs, if all the slots aren't filled, there is a specific slot that gets the next stick. Try the manual, if you don't have that you are stuck with trial and error. If all the slots report that the stick is dead, then its dead or there is another issue that I'm not thinking of going on.

 

[elisz]

well my RAM slots are only 2. My MOBO is an ASRock H81M-HDS. it doesn't say anything about putting a RAM first on whcihever slot

 

[rolli59]

Try one stick at a time, if one works and not the other then we know it is the ram not the board or CPU.

 

[combinebasic]

You have incompatible bandwidth of your memory, be sure that you got the same bandwidth that compatible of your processor synchronization like also the MAX capacity and FSB. The better testing in this is to test it one by one in the ram slot. Be sure to remove SATA and power cable in testing in this. Use the BIOS main menu and look it there if your RAM have a correct capacity and have it test 1 by 1, 2 and 2 or 3 and 3 until you correct it. Simply remove the RAM not compatible.

 

[elisz]

I tried putting both RAMs on slot 1. The 2nd RAM did not work as it did not display anything. I tried both RAMs on slot 2 and displayed nothing on both. I also tried a different RAM stick on slot 2. Did not display anything. So its probably a dead RAM and slot. Damn....

 

[combinebasic]

If your mobo displayed normal before you put the wrong bandwidth, probably your mobo got problem, try to remove the BIOS battery and change the bios jumper to clear rtc and back the battery and change jumper to normal. Try if the display will go back using the old ram. Then try again to check your another RAm

 

[rolli59]

Yep looks like slot 2 is dead and 1 stick ram is dead. RMA board and ram if you can.

 

[Tradesman1]

Try resetting the CMOS then install the DRAM

 

[elisz]

Here's what I tried so far:

- Reset the CMOS
-Put 1 RAM on each to see if the frequencies are different. (They are not. Same frequency.)

I thought the 2nd RAM was dead until the motherboard detected it. The 2nd slot just won't work.

 

[rolli59]

Ok so it is most likely bad channel on the board. There is a slim chance it is the CPU since the memory controller is there but over 90% of the time it is the board.