X58 Platinum Shutting down then reboots

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new to i7

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I have had an X58 platinum since last December without any issues until a couple of weeks ago.  Every so often, it will just shutdown-all fans go off-just dies, and then will reboot on its own.  It shuts down randomly, sometimes while gaming, and sometimes when running internet explorer.  Sometimes it will repower and reboot immediately, other times it will reboot within 15 minutes later.  I have a I7 920 cpu, 3-1GB OCZ platinum memory, Asus 4850 video card, PC power and cooling 750 watt psu, antec 900 case, wd 640 gb drives (no raid).  I am running bios 1.3 with optimized settings.  Does anyone have any ideas?  I have been in contact with the PSU manufacturer and they are not convinced it is the power supply.  I have used PC Power and Cooling's Power-Tester and it tested ok.
 
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First thoughts are of a RAM problem. Do you have the utility CPU-Z? What does it say under the 'Memory' tab? I'm a little confused. In your text, you show 3X1G sticks, but in sig., 6G's. Could you clarify?

CPU-Z; http://www.cpuid.com/cpuz.php/
 
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Test with 1 x RAM and see if similar problem persists.

Next, have you scan your system for any malwares/trojans or virus yet?
 
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CPU-Z memory tab shows: TYPE: DDR3, Size 3072 MBytes, NB Frequency 2136.6 MHz, DRAM Frequency 534.6, FSB Dram 2:8, 7,7,7,20, 1T.  The RAM is OCZ3P1333LV1G.  I will try it with 1 gb of ram in the first slot.  I run norton internet security, I do malware searches with adaware, malwarebytes, etc.  I have WINXP SP3, I have the auto reboot on error box unchecked.  The system just shuts down, losing all power, lights, etc  then restarts on its own.

Thanks,
 
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Set your DRAM voltage to 1.65V. I believe your RAM settings should be 7-7-7-24, not 7-7-7-20 (although @1066MHz, it should be fine).
 
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new to i7 said:
CPU-Z memory tab shows: TYPE: DDR3, Size 3072 MBytes, NB Frequency 2136.6 MHz, DRAM Frequency 534.6, FSB Dram 2:8, 7,7,7,20, 1T.  The RAM is OCZ3P1333LV1G.  I will try it with 1 gb of ram in the first slot.  I run norton internet security, I do malware searches with adaware, malwarebytes, etc.  I have WINXP SP3, I have the auto reboot on error box unchecked.  The system just shuts down, losing all power, lights, etc  then restarts on its own.

Thanks,
Click to expand...

Do a search in your OS and see if you find any autorun.ini file which indicates explorer.exe in the file itself. This may be the cause of the restart as it is a simple trojan file which makes mess out of the system.
 
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My system seems to be running ok with just 1 stick of ram in the first slot.  What is the next step and what is learned by this?  Also, I did a virus scan and didn't find any problems.
 
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I suggest that you swap RAMs and test them out individually and see which is the one that creates the problem.
 
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It looks like I have one bad stick of RAM,  when I tried to start up with the one bad stick, the computer would power down and try restarting over and over.  It looks like I will need to get it replaced.  I see they are selling 6 gb ram sticks now, would it be better to get one of these rather than 3X2gb sticks?  Which would perform better etc.  Thanks for all the help, things are are running much better now. :lalala: :worship:
 
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Glad you found the cause of the problem. A single 6G RAM stick 'might' not work properly. In the manual, page 2-9, in the gray colored 'Important' note, it talks about 4G modules. 4GX6 slots = 24G boards max. capacity. A single 6G, would also only be operating in 'single' channel mode. Operating in 'triple' channel, may be the better way to go. 3X2G, or maybe 3X4G.
 
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Blaise said:
Set your DRAM voltage to 1.65V. I believe your RAM settings should be 7-7-7-24, not 7-7-7-20 (although @1066MHz, it should be fine).
Click to expand...

7-7-7-21 will work best in regards for stability compared to 7-7-7-20. It allows ample time for the memory to complete any given operation. If you run the memory at 7-7-7-20, there is a *chance/possibility* that the data column or row will be cut off before the data can finish the operation. This can cause parity issues and instability. It's all in adding up the numbers to make sure there is ample time for the data to read/write. The 4th number is the total time to complete all operations.

So 7+7+7=21. Of course this is not gospel and you can tweak your timings for differences...say 8-8-8-23 / 9-9-9-24.

I'm running my memory at 6-6-6-18 and it has been very stable. I might try 6-6-6-15 to see if I can pull it off. I will have to set my voltage to 1.65. You just have to give it the proper voltage to run at more aggressive timings. I personally like the tighter timings. I can really see the increased responsiveness and crispness.

Here's a photo link of my system. http://i237.photobucket.com/albums/ff310/hmcmil1/voltages/system2.jpg

edit: I am now running at 6-6-6-15 1T @1.6v. It is amazingly crisp. Computer has been stable SMP folding for over two days straight now. Have fun tweaking your ram, but be aware of the issues that can result.  Glad to hear you found out your problem!
 
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new to i7 said:
It looks like I have one bad stick of RAM,  when I tried to start up with the one bad stick, the computer would power down and try restarting over and over.  It looks like I will need to get it replaced.  I see they are selling 6 gb ram sticks now, would it be better to get one of these rather than 3X2gb sticks?  Which would perform better etc.   Thanks for all the help, things are are running much better now. :lalala: :worship:
Click to expand...

Glad that the problem is found.  :biggthumbsup:
 
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