RAM slots Issues

Acuney

Prominent
Apr 11, 2017
3
0
510
Ok so this is a strange thing that happened to my cousin. He bought a PC with a second hand motherboard and CPU from my best friend (they are still and was in working condition when he bought it)
The motherboard worked fine for months up until a few weeks ago when the whole PC became very slow. At first we thought it was a bunch of programs so we unistalled them. But it was still slow. Something then told me to check the system and low and behold windows only recognized half the RAM. (At that time there was 4x 1GB Kingston RAM in the build so all 4 slots were being used)

We (my bff and I whom he bought the PC from) then proceeded to check if the RAM was fine and they were, all 4 sticks were working perfectly fine in another PC. We then used other RAM, HyperX 2x 4GB, and it did the same only recognising half. After numerous trails and errors we discovered that the motherboard only recognises either both black slots or both blue slots, but refuse to recognise both colors at the same time.

We did everything imaginable, reset the motherboard, flashed the motherboard, updated the bios, took out and reinserted the CPU, checked the CPU for bent pins, even tested the CPU in another PC and it works fine. Nothing of the above fixed the issue.

My problem is why was it working a few weeks ago and suddenly one night it acted up?

Please understand, my cousin is still in school, he has no job and my bff did him a huge bargain favour with this PC, so my cousin cannot afford a new motherboard and CPU. His family is struggling financially so his parents won't be able to buy him one either. He saved up for this thing for quite some time and my bff is not a person who sells broken stuff to others. He is a computer genius and looks after his components to the point where they are in mint condition. I am not vouching for him I am merely saying this because I have seen it.

I am not sure what motherboard my cousin has as the box got lost after a few years. But I know it's an Asus and it's pretty old, it supports up to second gen I's.

Sec gen i7 2600 @3.2GHz (I think)
700w Corsair PSU
16GB Corsair Vengeance RAM (since it's 2 8GBs the PC recognises both currently in the black slots)

The PC boots up whether it recognises half the RAM or not.

I hope this information helps. If there is someone out there that maybe has a solution that had this happen to them as well, please let me know.

If you require further info I can get it but it might take some time, this is all I can give right now on the issue.

Thanks
 

Acuney

Prominent
Apr 11, 2017
3
0
510


 

Acuney

Prominent
Apr 11, 2017
3
0
510
As far as I know we did remove the battery and tried to tweak the volts as well (excuse me I am not THAT clued up about PCs so I might say something incorrectly) My bff basically did everything he could possibly think of and from what I could gather what he did with the PC he also did exactly what you mentioned above. Still didn't work.
 
Hello... here is a procedure to follow and try B )

Take your time here and be slow and careful to your MB... look in your MB manual/Pdf for pictures and location of the SW/pins. B )
1) un-plug PS from wall.
2) remove MB battery
3) place jumper pins OR push switch on MB to clear the capacitors... for ~2 mins
4) remove Jumper/switch connection.
5) re-install battery

Look in your manual for the correct RAM slots you want to use/test for "Dual channel" operation with this MB.

6) plug monitor into the MB *
7) plug in PS to wall
8) Boot computer.

*You will need to remove you Video card as the CPU/IGT will be the NEW default in your BIOS on first BOOT.

** Your BIO's will be set back to defaults of the BIO's version... so if you had some 'special' settings? ...change them back in the BIO's (save&exit).

 
Hello... Not all DDR3 memory is the same... DDR3 is just a "Card factor" and what chips that get put on them can vary in communications and use... So it's possible you don't have the right type for the CPU or MB ? B /

if the correct Ram is used... typically re-seating and repeating the above procedure will get them all to read. B )

There are a lot of very small electrical connections... so using some rubbing alcohol and a cotton swab to clean the Ram sticks will help too.
 

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