ElGenius1 Posted February 13, 2008 Share Posted February 13, 2008 Hello, I'm having serious problems with my computer crashing and I think the memory is faulty. I have 2 sticks of corsair ram, stated below. MEM 1Gx2|CORSAIR TWIN2X2048-5400c4 My motheboard is an ASUS P5B DELUXE. I have the latest bios, and my problem is that my computer will constantly crash, within just a few minutes of being in Windows (XP). Not a BSOD, but simply, just crash, the screen will go blank, and I have to turn off my computer, and wait a few minutes before turning it back on, because it won't turn on right away. I have ran memtest and it always freezes within the first 30 seconds of running. (yes i disabled USB legacy support when running memtest and put the settings described in this forum). Also, many times I see the computer say 'Overclocking failed' in the boot-up, but I have never overclocked my system, so this confuses me further. I would like for RAM GUY to please help me out and post what are the settings I should be running everything at, in the BIOS. Is it 2.1 Volts? 1.9 Volts? What about all the other settings? I just want to make sure I am putting the right settings before getting my memory RMA'd. What makes me think that my ram is bad is that when i swapped it out with my brother's ram which is identical to mine, except its a higher revision and has Platinum heat spreaders, the machine is stable and does not crash. Please help.... Link to comment Share on other sites More sharing options...
Wired Posted February 13, 2008 Share Posted February 13, 2008 http://www.asktheramguy.com/forums/showthread.php?t=52348 SDRAM CAS Latency: 4T SDRAM RAS to CAS Delay (tRCD): 4T SDRAM Row Precharge (tRP): 4T SDRAM Active to Precharge Delay (tRAS): 12T memory voltage min: 1.9v memory voltage max: 2.1v Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted February 13, 2008 Corsair Employees Share Posted February 13, 2008 It is very unlikely that both modules would fail at the same time. To help troubleshoot, I would suggest testing the modules individually in the same memory slot. If one of the modules fails and the other works, then we will need to replace both of them for you. However, if you get errors with both of them, that would usually suggest some other problem. Link to comment Share on other sites More sharing options...
ElGenius1 Posted February 13, 2008 Author Share Posted February 13, 2008 thanks for the replies, guys. Yes, I have the settings of 4-4-4-12 and I have tried 1.9 V as well as 2.1 Volts. It still crashes. These are the settings I'm using, as per RAM guy's recommendation on the page for that specific RAM. CPU External Frequency: Manually set to 250MHz DDR2 SDRAM Clock: Manually set to 533MHz DRAM Timing Selectable: Auto Yields the following timings SDRAM CAS Latency: 4T SDRAM RAS to CAS Delay (tRCD): 4T SDRAM Row Precharge (tRP): 4T SDRAM Active to Precharge Delay (tRAS): 12T DDR2 SDRAM Voltage: 1.9 NB Voltage 1.9 Volts (On Abit AA8 Only) All other settings are motherboard defaults. Maximum DDR2 recommended VDIMM: 2.1 Volts I also changed ‘Write to Precharge delay’ in the BIOS from default 10 to 15, as stated in the sticky thread for P5B-X mobo's. However, I have not tried running memtest with each individual stick. I will try that later today and let you know how it goes... Link to comment Share on other sites More sharing options...
Xtreeme Posted February 13, 2008 Share Posted February 13, 2008 Also if both pass individual. Then try the other dimms for dual channel. Link to comment Share on other sites More sharing options...
ElGenius1 Posted February 13, 2008 Author Share Posted February 13, 2008 Also if both pass individual. Then try the other dimms for dual channel. what do you mean by, "then try the other dimms for dual channel"? to try the sticks in the different slots? Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted February 13, 2008 Corsair Employees Share Posted February 13, 2008 to try the sticks in the different slots? Yes, just to rule out a faulty slot on the board. Link to comment Share on other sites More sharing options...
ElGenius1 Posted February 14, 2008 Author Share Posted February 14, 2008 question for you guys. In the recommended settings, it says i should manually set the CPU frequency to 250 MHz, and also set the DDR2 SDRAM clock to 533 MHz. However, in my bios, setting one of these affects the other. Meaning if i set the DRAM frequency to 533 Mhz, then that sets the CPU freq to 266. the only way i can set the cpu freq. to the required 250 is by setting the dram freq. to 500 MHz.....so this begs the question, which do i set it too? I am confused here. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted February 14, 2008 Corsair Employees Share Posted February 14, 2008 Don't go off of those settings, you are using a different board which uses a different chipset. Use these: Load Defaults in the BIOS SDRAM CAS Latency: 4T SDRAM RAS to CAS Delay (tRCD): 4T SDRAM Row Precharge (tRP): 4T SDRAM Active to Precharge Delay (tRAS): 12T Memory Voltage: 1.9 All other options can be left at auto/default, the frequency will be detected automatically by your motherboard. Link to comment Share on other sites More sharing options...
ElGenius1 Posted February 15, 2008 Author Share Posted February 15, 2008 tried those settings. my computer is getting worse and is now giving me problems booting up. My brother has an almost identical build to my computer (same mobo, same RAM, same PSU) so I swapped out my bad RAM with 2 sticks of his RAM, which is TWIN2X2048-5400c4PT (same memory as mine except its PT) and my computer booted up with no problems and is stable. To further investigate, I put my 'bad' RAM into his computer which is stable and has never had problems, and his computer started crashing. Its clear to me that my RAM is bad. Just sent in an RMA, hope it gets processed quick. Link to comment Share on other sites More sharing options...
ElGenius1 Posted February 15, 2008 Author Share Posted February 15, 2008 ok just to give you guys an update. The reason that memtest was freezing before was because I was using an older version of memtest. So today I downloaded and ran the latest memtest v 1.70 and found some interesting results. I ran each stick individually. One of my sticks of ram was perfect - ran 3 passes with no errors at all. The other stick - got a crapload of errors right away, red screen, the whole shebang. :eek: My RMA has been submitted, hope to get this issue fixed soon! Btw, RAM GUY - do i have to send both modules in, or just the bad one that gave me errors? Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted February 15, 2008 Corsair Employees Share Posted February 15, 2008 Yes we will want to get the set replaced for you. Link to comment Share on other sites More sharing options...
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