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Windows 7: 2gb RAM OK but 4gb = BSOD

24 Oct 2009   #1
christophero

Windows 7 RTM
 
 
2gb RAM OK but 4gb = BSOD

Hi guys!

Ok so I've finally narrowed down my bsod's (at startup) to the following face: One stick of 2gb RAM works perfectly, but when running with 2 times 2gb it fails.

The bsod's show up at startup, just at the windows-logo. It doesn't always fail but most often after cold boots - after being shutdown and idle for about a day.

I'm sure both memories are ok via Memory Diagnostic tool and by running them one at a time.

I am quite confused on how to tackle this problem, ideas are most welcome.

I'm running:
  • MK Asus P5KPL SEATX, G31/ICH7, S775
  • CPU Core 2 Quad Q94002,66GHz/6MB/1333MHz/S775
  • OCZ 4GB Gold XTC DDR2Kit PC2-8500, 1066MHz
OS is Windows 7 RTM 32-bit, and yes I'm aware it will only support 3,5gb ram but from what I understand it should not cause these troubles, correct?


My System SpecsSystem Spec
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24 Oct 2009   #2
zigzag3143

Win 8 Release candidate 8400
 
 

Quote   Quote: Originally Posted by christophero View Post
Hi guys!

Ok so I've finally narrowed down my bsod's (at startup) to the following face: One stick of 2gb RAM works perfectly, but when running with 2 times 2gb it fails.

The bsod's show up at startup, just at the windows-logo. It doesn't always fail but most often after cold boots - after being shutdown and idle for about a day.

I'm sure both memories are ok via Memory Diagnostic tool and by running them one at a time.

I am quite confused on how to tackle this problem, ideas are most welcome.

I'm running:
  • MK Asus P5KPL SEATX, G31/ICH7, S775
  • CPU Core 2 Quad Q94002,66GHz/6MB/1333MHz/S775
  • OCZ 4GB Gold XTC DDR2Kit PC2-8500, 1066MHz
OS is Windows 7 RTM 32-bit, and yes I'm aware it will only support 3,5gb ram but from what I understand it should not cause these troubles, correct?
Chris

can you go into c:\windows\minidump, zip the dump file (*.dmp) and upload it to us for debugging.

Let us know if you need any help with this

Ken
My System SpecsSystem Spec
25 Oct 2009   #3
christophero

Windows 7 RTM
 
 

I could do this but I'll tell you right away that I've had several different bsod's, which I previously uploaded to another forum and they blamed the downloaded OS and other things that did obviously not cause the problem since I now know the issue has some relation to the RAM.

I'll upload the dump files at next bsod.
My System SpecsSystem Spec
.

25 Oct 2009   #4
torrentg

7600.20510 x86
 
 

Raise the ram voltage in the motherboard bios. Especially since it's OCZ. They need more voltage man!

This page says 2.1v. You can go slightly higher, safely, if needed. 2.2v and 2.25 alright.

http://www.ocztechnology.com/product...b_dual_channel

Yours is probably set at only 1.8v right now.

And go to that "other" forum and tell 'em who's best! lol
My System SpecsSystem Spec
25 Oct 2009   #5
christophero

Windows 7 RTM
 
 

Quote   Quote: Originally Posted by torrentg View Post
Raise the ram voltage in the motherboard bios. Especially since it's OCZ. They need more voltage man!

This page says 2.1v. You can go slightly higher, safely, if needed. 2.2v and 2.25 alright.

OCZ Technology | Products | Memory | OCZ DDR2 PC2-8500 Gold Edition 4GB Dual Channel

Yours is probably set at only 1.8v right now.

And go to that "other" forum and tell 'em who's best! lol
When googling around I came about this solution also, but when in BIOS changing the voltage to 2.1 (yes I have probably 1.8 now, set by auto) caused the digits to turn red, and since that would be an indicator of a dangerous change I did not have the guts to change it.

But is it safe? Is there not any risk that I'll burn the memories?
My System SpecsSystem Spec
25 Oct 2009   #6
torrentg

7600.20510 x86
 
 

It is completely safe. It's actually worse for you right now at 1.8 with that memory, as far as "safe." You ram is begging for more power.

Do not worry about the red. You have performance memory that it is critical for you to adjust to.

Make it 2.1 or 2.15 and you will be happy.

Enjoy! This kind of change is even more necessary since you have more than one stick.

Refer to this from the OCZ page I showed you:

"**OCZ EVP (Extended Voltage Protection) is a feature that allows performance enthusiasts to use a VDIMM of 2.15V without invalidating their OCZ Lifetime Warranty."


My System SpecsSystem Spec
25 Oct 2009   #7
christophero

Windows 7 RTM
 
 

I switched it to 2.1V and first boot was OK, time to wait and see if it helps. I'll get back on that.

Meanwhile, do I need to crank up the Mhz aswell? It's currently set to auto.
My System SpecsSystem Spec
25 Oct 2009   #8
torrentg

7600.20510 x86
 
 

You did the right thing. Your bsod are a thing of the past, unless you come upon any new issues.

No, leave the mHz alone. Auto should be fine. Again, refer to the page from OCZ. That has all the correct info you can place into your bios settings, if you wish. Match the timings in your bios to what is on the page (5-6-6-18).

On a side note, I have OCZ Platinum DDR memory. DDR default voltage is 2.5v. I'm running at 2.8v and I plan to up that to 3.0v to see if I can get a better CPU overclock.

Reference for my memory in case you're curious:

OCZ Technology | Products | Memory | OCZ EL DDR PC-3200 Dual Channel Platinum XTC

If you want to see your memory bandwidth, from a command prompt, type

winsat mem
and hit enter.
My System SpecsSystem Spec
25 Oct 2009   #9
silentcontrol

Windows 7 Professional x64
 
 

Funny, I had the same problem too. My computer kept crashing when I added another RAM stick @ the 2nd slot. Of course I bought the same model of RAM, so that rules out hardware incompatibility. My PC crashes whenever these 3 are in use:

- utorrent
- Yahoo! Messenger
- 1TB WD external hard drive plugged in

What I did was, I reformatted my PC with 4GB of RAM (two 2GB sticks) and the problem went away instantly.

This happened in 64-bit RC. I'm using retail now.

Anyway, I'll check this solution out just to make sure that mine gets enough voltages. Thanks for the help.
My System SpecsSystem Spec
25 Oct 2009   #10
torrentg

7600.20510 x86
 
 

Yeah. OCZ being performance memory and geared towards gamers, enthusiasts and overclockers, their memory simply needs more power. It is designed like this purposely.

Many motherboards, regardless of memory brand in use, require a bump up in voltage when all the ram slots are occupied by ram sticks and in use. It's just how it goes.

Silent, do you know the specs and maker of your memory?
My System SpecsSystem Spec
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 2gb RAM OK but 4gb = BSOD




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