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PC Stability PC freezes


mcsebiker

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New System and online reseller will not RMA since past 30 days

 

Asus P5N32-E SLI Plus, Intel Core 2 DUO E6850 GeForce 8600 GTS, and finally Corsair TWIN2X2048-6400 (that's what I ordered got TWIN2X2048-6400 G...tell me it's the same and compatible RAM GUY)

 

PC will freeze in multiple apps, BattleField2, MS Office, other games. Whatever screen you are on stays displayed on screen. No reboot, No Blue Screen, can't CTRL+Alt+Del out, can't ALT+TAB out. Have to hold in the button. Where can I start troubleshooting? I'm a server tech so I did the basics. Firmware upgraded, XP reinstalled, different video drivers, memory sticks in channel B, one memory stick (don't remember it freezing on me with one stick). I downloaded the memory tester ISO and ripped it to CD booted into DOS and let the memory tester run with both sticks in for 12 hours (7 passes I think) NO errors!? Where next, $1000 :confused:of hardware and not stable.

 

Thanks

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i'm running a very similar setup and having the same problems with the exception that i'll get blue screens on occasion as well.

Asus P5N32-E SLI, Core 2 Duo E6850, 8800gts, Twin2x2048-6400C4Pro, Windows XP Pro, Latest Bios-1205.

i've manually set the memory to no avail and run memtest overnight with it detecting no errors.

When using only one of the modules it is completely stable. i even switched them hoping the one i wasn't using would cause stability problems, but it still runs well.

 

i realize this is probably more about my unfortunate choice of a mobo than the memory, but any help in getting this sucker stable without having to spend any more money on it would be greatly appreciated.

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Corsair TWIN2X2048-6400 (that's what I ordered got TWIN2X2048-6400 G...tell me it's the same and compatible RAM GUY)

 

I'm not RAMGUY but I will try and help you.

 

The P5N32-E Sli Plus is a hybrid board and has been shown to be problematic. The newer BIOS's have attempted to fix the issues but have halted the overclock ability. Download and downgrade the BIOS to version 0801.

 

I also can not find your memory in the memory configurator for your motherboard so it could well be that your DRAM is incompatible with this board.

 

Try these settings:

 

Multiplier = 9

FSB = 333

DRAM = Unlinked and set to 800Mhz

 

Memory Timing

 

FSB - Memory Clock Mode: Unlinked

CPU FSB: 333

CPU Multi: 9

DDR FSB: 800

tCL: 5

tRCD: 5

tRP: 5

tRAS: 15

 

Advanced Memory Settings

tRRD: Auto

tRC: Auto

tWR: Auto

tWTR: Auto

tREF: Auto

Async Latency: Auto

CMD: 2T

 

CPU Spread Spectrum: Enabled

PCIE Spread Spectrum: Enabled

MCP PCIE Spread Spectrum: Enabled

SATA Spread Spectrum: Enabled

LDT Spread Spectrum: Enabled

 

CPU Internal Thermal Control: Enabled

Limit CPUID MaxVal: Enabled

Enhanced C1 (C1E): Enabled

Execute Disable Bit: Enabled

Virtualization Technology: Enabled

Enhanced Intel Speedstep Tech: Enabled

LDT Frequency: 5x

 

-- Voltages --

 

Vcore = Auto

Vdimm (DRAM Voltage) = 2.0v

1.2v HT: Auto

NB Vcore: Auto

SB Vcore: Auto

CPU VTT: Auto

 

It sounds as though your board is incompatible with this DRAM though. I believe that the Corsair TWIN2X2048-6400 is a different memory stick than the Corsair TWIN2X2048-6400 G, however this is more in the realm of RAMGUY's experience.

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i'm running a very similar setup and having the same problems with the exception that i'll get blue screens on occasion as well.

Asus P5N32-E SLI, Core 2 Duo E6850, 8800gts, Twin2x2048-6400C4Pro, Windows XP Pro, Latest Bios-1205.

i've manually set the memory to no avail and run memtest overnight with it detecting no errors.

When using only one of the modules it is completely stable. i even switched them hoping the one i wasn't using would cause stability problems, but it still runs well.

 

i realize this is probably more about my unfortunate choice of a mobo than the memory, but any help in getting this sucker stable without having to spend any more money on it would be greatly appreciated.

 

Try the above settings. Change:

DDR FSB: 800

tCL: 4

tRCD: 4

tRP: 4

tRAS: 12

 

-- Voltages --

 

Vcore = Auto

Vdimm (DRAM Voltage) = 2.1v

1.2v HT: Auto

NB Vcore: Auto

SB Vcore: Auto

CPU VTT: Auto

 

Results?

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That's what i have them currently set to.

Oddly, i'm beginning to think i have a problem with one of the sticks. i could not get it to even post with both modules in just now and the LED display on one of the sticks seems fairly unresponsive compared to the other one. Knowing my luck i caused harm to them by removing them one too many times.

Much appreciated though, DerekT.

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That's what i have them currently set to.

Oddly, i'm beginning to think i have a problem with one of the sticks. i could not get it to even post with both modules in just now and the LED display on one of the sticks seems fairly unresponsive compared to the other one. Knowing my luck i caused harm to them by removing them one too many times.

Much appreciated though, DerekT.

 

If memtest is not showing errors I think that the problem lies elsewhere. Can you turn the system off and set the DRAM to the second set of banks. Results?

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This DRAM is not in the compatibility list for that motherboard. I would try a different set of DRAM such as in the compatibility list:

 

http://www.corsair.com/configurator/product_results.aspx?id=92100

 

Keep in mind that the only 6400C5 G that is in the list is the 4GB sticks. The TWIN2X2048-6400C4 is in the list as well as the TWIN2X2048-6400, but not the TWIN2X2048-6400 G.

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  • Corsair Employee
The "G" just means its ROHS complaint and the modules would be the same as long as they are the same revision. However, with 4 modules you should be running the memory at DDR667 as long as you have a 1066 FSB CPU.
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The "G" just means its ROHS complaint and the modules would be the same as long as they are the same revision. However, with 4 modules you should be running the memory at DDR667 as long as you have a 1066 FSB CPU.

 

So 6400 is the same as 6400 G regarding the DRAM list and this applies on "G" modules across the board?

 

He's only got two modules of 1GB RAMGUY. I posted that the only "G" version in the compatibility list were the 4G kit.

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So RamGuy and DerekT...

Looks like torgos got some help on my post too

We've established that my board has the Twin2x2048-6400 on it's compatability list and the -6400 G zipzoomfly.com sent me is good to go also and should make no difference. Since they won't RMA and I have to contact all vendors.

 

Does a freeze like this point to memory usually and I have should try to tweak as derekT suggested below or should I also continue with the mobo and cpu vendors:

Multiplier = 9

FSB = 333

DRAM = Unlinked and set to 800Mhz

 

Memory Timing

 

FSB - Memory Clock Mode: Unlinked

CPU FSB: 333

CPU Multi: 9

DDR FSB: 800

tCL: 5

tRCD: 5

tRP: 5

tRAS: 15

 

Advanced Memory Settings

tRRD: Auto

tRC: Auto

tWR: Auto

tWTR: Auto

tREF: Auto

Async Latency: Auto

CMD: 2T

 

CPU Spread Spectrum: Enabled

PCIE Spread Spectrum: Enabled

MCP PCIE Spread Spectrum: Enabled

SATA Spread Spectrum: Enabled

LDT Spread Spectrum: Enabled

 

CPU Internal Thermal Control: Enabled

Limit CPUID MaxVal: Enabled

Enhanced C1 (C1E): Enabled

Execute Disable Bit: Enabled

Virtualization Technology: Enabled

Enhanced Intel Speedstep Tech: Enabled

LDT Frequency: 5x

 

-- Voltages --

 

Vcore = Auto

Vdimm (DRAM Voltage) = 2.0v

1.2v HT: Auto

NB Vcore: Auto

SB Vcore: Auto

CPU VTT: Auto

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I would try the settings I gave. I have never seen the Dual Channel problem be the DRAM when the DRAM is a kit. I have seen two sticks in a kit being in error with dual channel because the kit was wrong and the sticks either had errors shown by memtest or they were not identical matched pairs. When the sticks SPD settings are correct, and the modules/version numbers are identical then an issue such as this has always been mainboard. This has been my experience and I build quite a few systems.

 

It is always a good idea to purchase hardware from a reputable company that will issue RMA without problems.

 

It is very, very doubtful that you have a CPU issue. It's possible but highly unlikely. Looking to the mainboard would be my advice.

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I mad the bios change except the FSB settings. Can see buying a board that fast and then setting it that low. made the other suggestions. I went online and played a few games and it is stable for now. Hopefully that is the fix. Thanks for all the assistance if that is indeed the end!!:biggrin:
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Your 6850 should have no problems at 3.6Ghz. What are you set at and what are your voltages at that setting? What is the FPO/Batch number of your CPU? Can you open Core Temp and tell me the VID?

 

Multiplier = 9

FSB = 400

DRAM = Unlinked and set to 800Mhz

 

Memory Timing

 

FSB - Memory Clock Mode: Unlinked

CPU FSB: 400

CPU Multi: 9

DDR FSB: 800

tCL: 5

tRCD: 5

tRP: 5

tRAS: 15

 

Advanced Memory Settings

tRRD: Auto

tRC: Auto

tWR: Auto

tWTR: Auto

tREF: Auto

Async Latency: Auto

CMD: 2T

 

CPU Spread Spectrum: Enabled

PCIE Spread Spectrum: Enabled

MCP PCIE Spread Spectrum: Enabled

SATA Spread Spectrum: Enabled

LDT Spread Spectrum: Enabled

 

CPU Internal Thermal Control: Enabled

Limit CPUID MaxVal: Enabled

Enhanced C1 (C1E): Enabled

Execute Disable Bit: Enabled

Virtualization Technology: Enabled

Enhanced Intel Speedstep Tech: Enabled

LDT Frequency: 5x

 

-- Voltages --

 

Vcore = 1.4v - 1.45v

Vdimm (DRAM Voltage) = 2.0v

1.2v HT: 1.3v

NB Vcore: 1.35v

SB Vcore: 1.50v

CPU VTT: 1.30v

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This seems like a trend with Asus motherboards, you'd think Asus would consult with Corsair about their BIOS settings etc.

 

You get the exact same hangs I do, but im not convinced its a memory error. Or does your system act like mine and once it hangs on the reboot it wont POST and wont load windows for a few boots ?

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Well I finally got some time to get on the machine and do some moving around in the system. It's still freezing on me I got my hopes up the other day.

 

That 6400 G is still geting me but Ram Guy said it was kosher so I'll go with that.

 

And no it's not hanging on post like your system. I get thru ok post, splash screen and OS. Now I'm in the middle of doing all of ASUS's troubleshooting. board out of box, etc. temp seems fine and all the rest. I think I'm gonna start the RMA process....Unless someone has some other suggestions.

 

DerekT to answer your question I set everything the way you wanted voltage and everything. The one exception wass the FSB

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mcsebiker

That answer really makes it hard to know, the exact settings you have set would be needed to really help you beyond this point with out trying to guess.

 

Levzi & mcsebiker

System hangs are not usually a memory issue, they can be but the O.S. and MB's are made to recover from a single bit error and would not normally display that type of a symptom. Especially if you have ran http://www.memtest.org and have not got any errors. But I would try the modules one at a time for a day or so each if it is a module then one module will display the same symptoms.

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