phyglenaut Posted September 11, 2009 Share Posted September 11, 2009 I had the exact same problem as many others on a system at work: Installed 12 GB worth of RAM in A1,B1,A2,B2,C1,C2 slots (orange and black) and only 8 GB recongizned in the BIOS. Occasionally, system would not boot/POST at all without rearranging memory sticks. It seemed to be A1,A2 that were the most troublesome slots. I could get all 6 mem sticks to work in the other slots, but not those 2. Those 2 seemed to be completely dead. I didn't believe at first that CPU reseating would be the issue since it ran Windows XP x64 no problems on 8GB. Everything seemed pretty much rock solid. I thought people reseating the CPU were just somehow getting lucky and thinking that was the solution, when actually it was just perhaps tweaking something else unnoticed. But after so many posts seemed to indicate reseating the CPU helped, I investigated. I tried to look at the 1366LGA socket pins on the board but they are so small it is very hard to see them with the naked eye, although I did notice towards the lower right hand corner (side closest to DIMM A2) some pins seemed to be askew. I certainly didn't want to RMA it for some slightly bent pins. Luckily, I am at a school, and was able to borrow a microscope. I removed the board, put it under the microscope, and sure enough, in the lower right hand corner (side closest to DIMM A2) about 3 or 4 pins were out of alignment. I don't want to say "bent" because if you look at the pins that close up, under a microscope, you see that they seem to be springloaded from below the socket. I was able to take a tweaker screwdriver tool, and carefully, one by one, "bend" the pins that were off back into alignment. They seem to spring into place if you push them just right. As soon as I did this, I looked with the naked eye and saw that all the pins looked perfect at that point (they did not before). Then I reassembled and all 12 GB were recognized immediately, no problems. Hope this helps others who are having the same problem. I do not believe this is a Corsair or any other memory brand problem. Also, I do not believe it really is a motherboard problem (other than a design flaw). It is as hornett said, "bent" pins, or I would say just pins that need to be pushed / sprung back into alignment. I think the clasp that fits over the socket does crimp or pinch or however you want to say it, the exact same pins on every board when installing CPU. That is why everyone has a problem with A1,A2 slots. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted September 11, 2009 Corsair Employees Share Posted September 11, 2009 If it is the pins bent in the CPU Socket I would suggest talking to the respective MB maker about replacing the MB. Link to comment Share on other sites More sharing options...
Sir_Light Posted October 15, 2009 Share Posted October 15, 2009 If anyone is still having issues with this problem I have an example as to what it is people are talking about. It took me about 2 days of searching before I finally managed to get my ram to show up properly after 1 single pin was slightly bent out of place. All you have to do is take a needle or something similar and GENTLY push the pin so it aligns in the same direction as the other pins that are next to it. Fairly straight forward. http://i37.tinypic.com/25s4nx2.jpg Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 15, 2009 Corsair Employees Share Posted October 15, 2009 Thanks for posting that I think it may help other to know what to look for. Link to comment Share on other sites More sharing options...
BiOGrr8xTc Posted February 25, 2010 Share Posted February 25, 2010 i have rma'd two asus P6X58D Premium mobo's because if this problem of only 4 gigs of my TR3X6G1600C7 showing up instead of the 6 gigs installed. i highly doubt it is from a bent pin on the mobo. i am now on my third P6X58D mobo and made sure their were no bent pins, but the same problem is happening again. cold boot, only 4 shows. after a few reboots 6 gigs shows. it would be great to have a guide for what needs to be exactly set in the bios so this problem wouldn't be such a pain the butt. is it only corsair ram with this problem, or are other ram manufacturers having this issue too? Link to comment Share on other sites More sharing options...
BiOGrr8xTc Posted February 28, 2010 Share Posted February 28, 2010 update: after a few days of banging my head in frustration, i finally got all 6 gigs to show up in windows. (thanks to the post on the forum about the x58 and ram!!) today out of sheer bordom i decided to run memtest 4.0. within 15 minutes memtest 4.0 returned 126 errors. this was strange to me as i havent experienced any system crashes or any BSOD. i do have a few occasions when a program would "hang" for a few seconds but that was the extent of it. could i have a flaky ram stick and that be part of the problem? is their a better program than memtest to check the ram to make sure before i ask for a RMA? thanks in advance for any advice! Link to comment Share on other sites More sharing options...
bp001 Posted March 14, 2010 Share Posted March 14, 2010 Well, I had a similar story. See it here for full details. http://forum.corsair.com/v3/showthread.php?t=85765&highlight=cold+boot Link to comment Share on other sites More sharing options...
ruudpel Posted July 26, 2010 Share Posted July 26, 2010 Hi folks, I'm experiencing the same problem, but there is a difference between me and the other users..first my specs: Asus P6T Deluxe (BIOS 2101) RAM TR3X6G1600C8D (3 x 2 GB, CPU-Z says part number CM3X2G1600C8D Just as the other users, my BIOS (and thus Vista x64) only recognizes 4 GB instead of 6 GB. CPU-Z does recognize 6 GB. But...here's the difference with the other reports here..whenever I select the Ai Overclock Tuner to Auto, the BIOS and Vista recognize 6 GB just fine, but as PC1066 instead of PC1600. Whenever I select anything else (i.e. XMP, DOCP, or any manual setting) the BIOS will only detect 4 GB. Any ideas? Thanks, Ruud Link to comment Share on other sites More sharing options...
skitey Posted July 30, 2010 Share Posted July 30, 2010 update: after a few days of banging my head in frustration, i finally got all 6 gigs to show up in windows. (thanks to the post on the forum about the x58 and ram!!) today out of sheer bordom i decided to run memtest 4.0. within 15 minutes memtest 4.0 returned 126 errors. this was strange to me as i havent experienced any system crashes or any BSOD. i do have a few occasions when a program would "hang" for a few seconds but that was the extent of it. could i have a flaky ram stick and that be part of the problem? is their a better program than memtest to check the ram to make sure before i ask for a RMA? thanks in advance for any advice! got the same problem. I started the pc COLD, checked my Win7 sysinfo, 4GB found! (thought W00t oO) Restarted, checked Bios, 6GB found....going further to Win7 and checked again the sysinfo, 6GB shown up. How to resolve THAT problem? Bios setting is XMP with changed volts to 1.64 (instead 1.66) for RAM regrats skitey Link to comment Share on other sites More sharing options...
djt Posted July 30, 2010 Share Posted July 30, 2010 is it only corsair ram with this problem, or are other ram manufacturers having this issue too? No it’s not only Corsair that has the problem. I RMA-ed 6GB of ******** Enhanced Ridgeback DDR3 1600 (PC3 12800) and 3 Asus Rampage III Extremes before I gave up because of this issue. The last time I RMA-ed everything including the CPU and heatsink. I ended up replacing the RAM with Corsair CMT6GX3M3A1600C7 and went with an H50 to replace the Noctua NH-D14 which I have a strong suspicion was causing motherboard flex. I haven’t experienced the problem since; all 6GB of Ram are recognized all the time. http://forum.corsair.com/v3/showthread.php?t=88307 Link to comment Share on other sites More sharing options...
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