I have a odd issue that just started today. When I went to power on my machine I had a long beep which according to the MB manual indicates a DRAM error (Gigabyre N650SLI-DS4).
I have two ocz2p1066gk memory sticks 2GB each which I had in the red banks for dual channel memory. I removed one stick and then the other to see which stick was bad. Each stick separately posted. I then tried to switch the sticks each one by themselves and it posted. I tried to put back both sticks and I got the beeps again.
I then proceeded to run a memtest on each stick in the first bank. Each one was clean on the first pass.
So I decided to bump up the memory voltage by +.1 and with both sticks in and the system booted! The memory sticks are rated at 2.1V so I'm assuming that it would be best to increase it by .275? If I select .3 the option is in red which I would assume is not a good idea.
My system locked up after a few minutes with the +.1 setting. Does anyone know what the problem may be? Do I need to go higher on the memory voltage or do I have a memory/MB issue? The memory has been running on automatic for a few months without any issues.
Edit: I set the settings back to the default and then ran another memtest. I got about 15,000 errors. I am trying to run memtest on the 3rd bank (2nd red bank) to see if I get the same errors.
Edit 2: I sat the two memory sticks in slot 2 and 4 and received 2 errors on the first pass. I'm going to run a few passes in the first bank with each stick to see which one may be bad but it is looking like a memory controller problem?
OK I've come to the conclusion that my MB dual channel controller is faulty.
Memory 1 in was clean in bank 1 2 and 4...3 would not post.
Memory 2 checked our ok in bank 1 and 3 didn't try 2 and 4
If I place memory in bank 1 and 3 the system won't post.
Memory in bank 2 and 4 generates 10 errors.
Memory in bank 1 and 2 generated no errors but I can't get into Windows without freezing.
I've been running on bank 1 with memory stick 1 for about 1/2 hr now with no problems. I have a tough decision to make because I am out of warranty and it difficult to find a 775 socket MB with raid and which will accept DDR2 memory. Worse case, I get one 4GB stick and place it in the 1st slot.
I don't know if this is an Nvidia problem with their chipset or Gigabyte but it has left a sour taste in my mouth.
I was getting random crashes since last November but thought it was related to the 3d driver from Nvidia.
Ok not sure what happened...I flashed the BIOS to one version above what I had. I then tried bank 1 and 3 and still had the same problem. I tried back 1 and 2 and while it isn't Dual Channel, I can get into my system. The last time I tried this configuration I couldn't get in. I've been running now for about 2 hrs without any problems. We'll see how long it lasts.