hyounglho Posted October 6, 2007 Share Posted October 6, 2007 I have been trying to figure this out for several weeks now going through some of the suggestions mentioned in the posts here but not helping. I have built a new system with the following: ASUS P5N32-E SLI PLUS nVIDIA nFORCE 650I SLI CHIPSET ATX FORM INTEL CORE 2 DUO E6750 (BX80557E6750) 2.66GHZ EM64T DUAL CORE W/4MB CACHE 1333MHZ LGA775 Cosair XMS2 TWIN2X2048-6400 G Thermaltake Purepower W0100RU ATX 12V 2.0 500W Power Supply Sony NEC Optiarc Black 18X DVD+R 8X DVD+RW Western Digital Caviar SE16 WD4000KD 400GB 7200 RPM 16MB Cache Serial ATA150 Hard Drive EVGA 256-P2-N554-AX GeForce 7600GT 256MB 128-bit GDDR3 PCI Express x16 SLI Supported Video Card XION Onyx XON-303 Black/Blue Steel ATX Mid Tower Computer Case When I boot up the system with both sticks(1GB X 2) the system freezes and it will stop in the middle of Windows XP Pro installation and Windows Vista Installation. I removed one stick and have only one, it will go through the installation WITHOUT any problems. I turn the power off after OS installation, I put the second stick back in, it will start to freeze again. I could sometimes get to the Welcome screen and sometimes cannot. I've checked the ASUS MOBO manual and made sure I placed both RAM stick in A1and B1 slot(ASUS makes it easier by making the color same. Blue for A1 and B1 and Beige for A2 and B2). I've tried A1 and B1 combo, A2 and B2 combo and both have failed to load OS. I have tried setting the timing manually in BIOS with 5-5-5-12, 2T and played with voltage from 1.9V, 2.0V, 2.1V and all have failed. I thought it could be the power source so I bought Ultra 600W unit from Altex(I've returned it so I'm not exactly sure of the model number) and still the same problem. I bought the memory kit from Newegg and I thought I had a defective RAM so I did return it and received a new kit and still the same problem. Yesterday, I've put in A1 and A2 slot and seems to work fine but from what I understand, if I do that, I will not take advantage of dual channelling. I've run out of options. I don't know what else to try. Could you Please help ?????? Oh, BTW, I did update the BIOS to the latest from ASUS with 0805 version and in the BIOS, SLI Memory option is disabled. Link to comment Share on other sites More sharing options...
DerekT Posted October 6, 2007 Share Posted October 6, 2007 Remove all peripheral hardware except Power Supply, Video, Optical Drive. Download memtest from http://www.memtest.org. I would test each DRAM module singly in each DIMM slot. Stick A and Stick B. Stick A tested in slots A1/A2/B1/B2 Stick B tested in slots A1/A2/B1/B2 If the sticks pass, then I would look to the mainboard as being the issue. Link to comment Share on other sites More sharing options...
subhuman Posted October 6, 2007 Share Posted October 6, 2007 This is almost the same problem I am having with a set of 8500c5's on an asus p5k except you're able to get further than me in dual channel. I cannot even post with the ram in dual channel configuration but it boots just fine with both sticks in a1/a2. I haven't run tests on each stick individually, but they pass when together. Please post if you're able to resolve this! Link to comment Share on other sites More sharing options...
DerekT Posted October 6, 2007 Share Posted October 6, 2007 This is almost the same problem I am having with a set of 8500c5's on an asus p5k except you're able to get further than me in dual channel. I cannot even post with the ram in dual channel configuration but it boots just fine with both sticks in a1/a2. I haven't run tests on each stick individually, but they pass when together. Please post if you're able to resolve this! I do not think it is a good idea to wait a long time to resolve issues such as this as Warranties on motherboards can become quite an issue. How long have you had this board? I am working with a P5K-E at the moment and there is no problem with either the 6400C4/C5 or 8500C5 V1.xx and I am working with the 8500C5 2.xx right now. All have made Dual Channel. If they didn't I would immediately look to RMA of the board. I have never seen this issue be a DRAM issue because Dual Channel Mode is a function of the mainboard memory controller, not the DRAM. As long as the DRAM follows the requirements of the Chipset Dual Channel, then it is fine. These are Dual Channel Kits and unless there is an error between the SPD settings of the DRAM, then the issue is one of mainboard. Even if the DRAM had this error, it would not freeze the system, it would just not run in Dual Channel Mode. I believe that testing the DRAM with Memtest has isolated the issue to one of mainboard. Link to comment Share on other sites More sharing options...
hyounglho Posted October 8, 2007 Author Share Posted October 8, 2007 Just like DerekT had suggested, I've ran the MEMTEST on A1, A2, B1 and B2 slots and went through both sticks WITHOUT any errors through 3 to 4 passes. I honestly think DerekT was right in saying it is the motherboard. Fortunately, I bought the MOBO though mwave.com and the warranty is still in effect so I called got an RMA #. I will get a replacement in about 2 weeks or so. It sucks to be waiting but hey I take that anyday over having faulty MOBO. I will keep you updated and let you know how it works with the replacement MOBO. Thanks for the reply. :laughing::laughing::laughing: Link to comment Share on other sites More sharing options...
DerekT Posted October 8, 2007 Share Posted October 8, 2007 Let us know your results :) Link to comment Share on other sites More sharing options...
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