jpizzle Posted February 2, 2008 Share Posted February 2, 2008 I tried switching/swapping my memory with all the different slots and I've determined all the slots and each memory stick works.. I have no idea what's the problem I recently upgraded memory and saw this problem. running 2 x 1 GB sticks of.. I was using CM2x1024-6400 XMS2-6400 memory (XMS6405 v 4.1) 800mhz recently added.. 2 x 1 GB sticks of.. CM2x1024-6400 XMS2-6400 memory ** (1.90 v. ver. 5.2) 800 mhz almost exactly the same except the new one is a slightly newer version? I thought one stick was bad so I switched them around and they all work (unless I made an error). And I tried each individual slot and they all worked too. Never had any startup problems or anything like that. However, when installing all 4, my bios only reads 3 gb and the last one does not register. I realize windows XP pro will only recognize 2.96 or something, but my bios doesn't detect it and that worries me. Ran memtest and it found no problems (though I only ran it for like 15-20 min) My mobo is an ASUS P5B Link to comment Share on other sites More sharing options...
bigbuck08 Posted February 2, 2008 Share Posted February 2, 2008 Let Memtest run longer as it wouldnt have even completed one pass. It really sounds like a bad DIMM slot but you said you tested that. Try one of the modules that you know works in each slot seperately. See if the PC will boot in all slots. You are correct, a 32 Bit OS wont detect all of it but you BIOS should. Try updating to the latest BIOS if you dont have them already. Link to comment Share on other sites More sharing options...
DerekT Posted February 2, 2008 Share Posted February 2, 2008 Enter your BIOS and set the "Memory Remap Feature" to enabled. http://i41.photobucket.com/albums/e269/Ropey123/CIMG1724.jpg The BIOS should read the 4GB. Keep in mind that if you are using a 32bit OS such as Windows XP 32bit or VISTA 32Bit, you will not see the entire 4GB and will likely only see ~3.2GB or so due to the system resource DRAM addressing, hardware DRAM addressing and overhead. Since the maximum address space in a 32bit OS is 4GB, you will lose some for all the components that require addressing space in this area. Link to comment Share on other sites More sharing options...
jpizzle Posted February 3, 2008 Author Share Posted February 3, 2008 I did as you said DerekT and it worked! When I rebooted the bios showed 4 gigs. What's weird however, is that after making those changes in the bios, windows now only sees 2gb of RAM and not 2.96 like before... weird should I switch it back? haha at least I know everything works... which was my main concern Link to comment Share on other sites More sharing options...
DerekT Posted February 3, 2008 Share Posted February 3, 2008 Somethings up with your OS. With your system, you should be seeing ~3.2GB on a 4GB density. Link to comment Share on other sites More sharing options...
Xtreeme Posted February 3, 2008 Share Posted February 3, 2008 ya you should be seeing 3gb or little more. Could be that enabling memory hole didnt take effect in windows. Could try running a repair with XP cd. Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted February 5, 2008 Corsair Employee Share Posted February 5, 2008 Seeing less that 3.8 Gig is normal with any 32 Bit O.S. as you would never see the full four Gig the way the O.S. works. Link to comment Share on other sites More sharing options...
jpizzle Posted February 6, 2008 Author Share Posted February 6, 2008 I understand that ram guy, but I only see 2 gb when my bios detects 4 gigs. Running XP pro should I try a repair with the winxp CD? that won't require a formatting will it? any other options or ideas? Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted February 6, 2008 Corsair Employee Share Posted February 6, 2008 How much memory is shown in http://www.memtest.org. Link to comment Share on other sites More sharing options...
jpizzle Posted February 7, 2008 Author Share Posted February 7, 2008 How much memory is shown in http://www.memtest.org. Here are the stats: Intel Core 2 (2394 mhz) should be dual core 2.66 mhz? L1 cache: 64K 39253 mb/s L2 cache: 4096K 16744 mb/s memory: 4095m 4072 mb/s wall time 12 hrs cached 4095m rsvd mem 444k memmap e820-std cache on ecc off test std pass 15 errors 0 ecc errs blank everything look ok? processor showing up normally..? dunno exactly how to interpret data. looks like its reading all the memory. any solutions for a windows fix? or anything to get it reading the max winxp pro can show? Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted February 7, 2008 Corsair Employee Share Posted February 7, 2008 memory: 4095m 4072 mb/s Then it is the O.S. and if you have more than one Video card that may be why you should be fine. Link to comment Share on other sites More sharing options...
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