Only 1 of 4 ram slots working, broken mobo or other cause?

[ajj_howtorot]

My pc was working fine this morning, asus ch7, 3600x, rtx3070, 8gb x 2 ram @3600mhz working in dual channel

 

id decided to upgrade my ram, opened up my pc, i didnt touch anything apart from my ram, removed the old 2 sticks, replaced with new 16x2gb @3600mhz sticks in the exact same slots, and then got greedy and went ahead and put in the old 2 into remaining slots, 
 
ended with a 0d qcode, so i reset cmos, and starting with 1 stick at a time ive tested all sticks i have at hand.

all sticks now work, but only when its in A2. i can have sticks in A2 and B2, but only the one in A2 will light up and in bios and task manager i only see memory of 1 stick in A2.

Also having all 4 sticks in causes 0d error again. (only stickin A2 lights up)

any idea what might be the problem? im really hoping its not a faulty ram slot but at the same time hopeful because unlikely all 3 ramslots got damaged and hopefully something else is the problem

 

specs:

 

mobo: ASUS crosshair vii hero

 

cpu: amd 3600x

 

gpu: rtx 3070

 

ram: old- 8gb x 2 g.skill trident @3600mhz c18d

 

  new- 16gb x 2 g.skill trident neo@3600mhz c18d

[johnno23]

it is possible an update to the bios is required.but it sounds more like the mismatch of ram is causing an issue. if XMP is on turn that off is a quick option to try. but persoanlly i never mix ram even though it does often work I just dont like tasking the risks.

Also AMD like using all channels so 4 x 8 would have been faster than 2 x 16 in most scenarios.

[ajj_howtorot]

14 minutes ago, johnno23 said:

it is possible an update to the bios is required.but it sounds more like the mismatch of ram is causing an issue. if XMP is on turn that off is a quick option to try. but persoanlly i never mix ram even though it does often work I just dont like tasking the risks.

Also AMD like using all channels so 4 x 8 would have been faster than 2 x 16 in most scenarios.

thank you for your input

 

one weird thing is that even if i only use the 2 new sticks, only a2 slot works now.

 

is there a chance using all 4 sticks made some other permanent changes?

 

im willing to just run the 2 new sticks for 32gb if trying to use both old and new is too much trouble...but at the moment im stuck running 1 stick of 16gb

[johnno23]

I cannot imagine just using the ram would damage the slot unless you accidently try to force a stick the wrong direction for example before realising. I would also suggest you grab a light source as flashlight on the phone or an old fashioned torch and look carefully inside the dimm slots. maybe just a tiny piece of dirt got inside and is causing an issue. 

you could also consider a soft tooth brush and isopropyl alcohol and gently clean the internal area of the dimm slots.Simple things like dirt are often overlooked.

Also a good light source and inpection will let you see if there is any accidental and visible damage.

[ajj_howtorot]

33 minutes ago, johnno23 said:

I cannot imagine just using the ram would damage the slot unless you accidently try to force a stick the wrong direction for example before realising. I would also suggest you grab a light source as flashlight on the phone or an old fashioned torch and look carefully inside the dimm slots. maybe just a tiny piece of dirt got inside and is causing an issue. 

you could also consider a soft tooth brush and isopropyl alcohol and gently clean the internal area of the dimm slots.Simple things like dirt are often overlooked.

Also a good light source and inpection will let you see if there is any accidental and visible damage.

thanks a lot for your suggestions, it turns out some cat hair may have caused an issue as my B2 slot is now working after a quick air cleanout.

 

my cat wasnt anywhere near at the time i was tinkering but i guess that stuff can still happen

[johnno23]

Cats and PCs....LOL well done and very happy to hear your dimm slot is fine.