Now, my system works just fine and there really were no problems until I decided to upgrade my RAM. Like I said above, I have 4GB of Corsair DDR3 RAM already installed, and decided to get 4GB more as an upgrade. I purchased the following additional RAM to install:
G.SKILL Ripjaws Series 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800)
After installing it, I turned on my computer to see that instead of 8GB of RAM, I now had 6GB of recognizable RAM, only 1.99GB of which was defined as usable (as stated by my My Computer System Properties. Obviously I am confused as to why this might be happening, and I was wondering if this problem has been had before. If so, I'd appreciate any words of advice, because....well....I want to use my RAM!
Thank you in advance for reading and your thoughts.
i remember reading an issue about LGA1156 sockets made by foxconn (in various branded boards) having issues with burning under high clocks due to poor pin contact, and also causing sporatic memory issues just like yours (onboard mem controller on cpu). id RMA the mobo.
Some people have been having similar trouble with even 4 GBs and have been able to fix it by re-seating their CPUs. When the pins don't make proper contact, the memory can show up in the way you describe, for example 4 GBs (2 GBs usable). And if you're going to go the trouble of reseating your CPU, check for bent pins while you're in there: http://www.intel.com/support/processors/sb/CS-030850.ht...
However, I don't know if this would address your missing 2 GBs. Before you go pulling the CPU out, make sure all of your RAM sticks are completely seated. If you take out the 2 new sticks, do the 2 old sticks show up as installed and as usable?
I did test taking the new sticks out after having the system boot fail and indeed, the old memory worked just fine. I also tried using the old memory in the A1,B1 dual channel slots as well as putting one 2GB stick into A1 slot, which yielded a successful boot, but made the system run drastically slower (I didn't even get to my desktop after 7 minutes of booting). I looked at the BIOS system info while it was in and it said that there was only 2GB of Memory in the system. I ended up just removing the 3rd stick and putting the 2 original back in the system in their original A1,B1 slots.
I'll have to get a glove and a magnifying glass and follow those instructions you gave, thanks for that. I am kind of willing try to most anything to get it to work, as in that other thread the guy ended up succeeding in following that method.