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Could it be defective ram ?

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July 17, 2010 6:56:12 PM

Hi all,

I am looking for some opinions. Since i bought and built my new computer i have been having trouble with it. I get from time to time BSOD and firefox crashes, games have trouble loading without crashing etc.

Whats happens is: I have tested every slot with 1 slip of ram individually. Everything working perfect with memtest86.
Then i put my ram into slot 1-2 into dual channel ( white slots together) and ran memtest86 for 12 hours. No problems everything works perfect! But then im simply surfing on the internet with Firefox and i get a BSOD 0x00000050.
I then retry memtest86 and it finds errors on the first pass.

I remove both slips of ram, replace them tight so i'm sure they well placed and rerun memtest86. 12 hours later, perfect no problems! 2 days later, Critical kernal power, BSOD 0x00000050. I run memtest86 again... errors AGAIN on the first pass....

I don't get it... is it ram or Motherboard ??

Opinions ?

More about : defective ram

July 17, 2010 8:29:35 PM

Honestly sounds like RAM. Is the computer OEM or Custom and if it's custom what is the mobo and ram.
a c 97 } Memory
July 17, 2010 9:04:11 PM

If memtest 86+ ever shows an error, I would suspect the ram. But--- since you were able to run it for 12 hours without a problem, There may be something else going on.
Some motherboards may have ram issues which are corrected by a bios update. See if there is an update that seems to address ram issues. Do not update the bios unless it looks like it fixes a problem you are having.

Are you overclocking? If so, back off to default settings.

You might test using prime95. It will stress the cpu while also testing some ram. Set the option for rounding checking. You should get NO errors.
Related resources
July 17, 2010 10:21:51 PM

CPU overclocked?
Intel or AMD?
a b } Memory
July 18, 2010 2:21:27 AM

jp6666 said:
Hi all,

I am looking for some opinions. Since i bought and built my new computer i have been having trouble with it. I get from time to time BSOD and firefox crashes, games have trouble loading without crashing etc.

Whats happens is: I have tested every slot with 1 slip of ram individually. Everything working perfect with memtest86.
Then i put my ram into slot 1-2 into dual channel ( white slots together) and ran memtest86 for 12 hours. No problems everything works perfect! But then im simply surfing on the internet with Firefox and i get a BSOD 0x00000050.
I then retry memtest86 and it finds errors on the first pass.

I remove both slips of ram, replace them tight so i'm sure they well placed and rerun memtest86. 12 hours later, perfect no problems! 2 days later, Critical kernal power, BSOD 0x00000050. I run memtest86 again... errors AGAIN on the first pass....

I don't get it... is it ram or Motherboard ??

Opinions ?

Well, since you're asking for opinions, it could be voltage fluctation from the power supply. You didn't list your hardware configuration or settings, so I can't offer any specific advice.
July 18, 2010 2:33:34 AM

Replace the ram.
July 18, 2010 1:47:28 PM

From my own personal experience I would say it is most likely your RAM. It might be that your RAM chips are not the same brand? You should try to keep them the same brand because that can also cause this problem.

Another thing it could be is what one of the other guys mentioned earlier in this forum, it could be power. It migth be that your power supply doesn't have enough wattage to handle your pc hardware loud. What is the wattage of your PSU (power supply)?
July 18, 2010 4:10:35 PM

Ok guys, I have new info !

but first my PC configuration:

CPU : AMD Phenom 2 x4 965 125 watt (but for some reason it's getting 140watt) * overclocked to 3.8 ghz and NB 2200 ghz
GPU : XFX Radeon 5850
Powersupply : XFX 650 Watt
Motherboard : GIGABYTE GA-790FXTA-UD5
Memory : Gskill F3-12800CL9D-4GBNQ dual channel DDR3

Now the new info i have ! When i let my computer on for a while (including when computer is off but power supply is on), i will eventually get errors in my ram. But if I do a HARD REBOOT, meaning shutting down power supply for 30 seconds and turn it back on, i then run memtest86 and voila! NO ERRORS ! One day later, errors in memtest86, shut down power supply and retry, no errors !

Interesting huh ?
a b } Memory
July 18, 2010 5:19:02 PM

jp6666 said:
Ok guys, I have new info !

but first my PC configuration:

CPU : AMD Phenom 2 x4 965 125 watt (but for some reason it's getting 140watt) * overclocked to 3.8 ghz and NB 2200 ghz
GPU : XFX Radeon 5850
Powersupply : XFX 650 Watt
Motherboard : GIGABYTE GA-790FXTA-UD5
Memory : Gskill F3-12800CL9D-4GBNQ dual channel DDR3

Now the new info i have ! When i let my computer on for a while (including when computer is off but power supply is on), i will eventually get errors in my ram. But if I do a HARD REBOOT, meaning shutting down power supply for 30 seconds and turn it back on, i then run memtest86 and voila! NO ERRORS ! One day later, errors in memtest86, shut down power supply and retry, no errors !

Interesting huh ?

Try bumping your DRAM voltage up a little.
July 18, 2010 5:23:28 PM

It's 1.5v ram, should i try 1.55 ? I don't wanna fry my ram!
a b } Memory
July 18, 2010 5:49:21 PM

jp6666 said:
It's 1.5v ram, should i try 1.55 ? I don't wanna fry my ram!

You won't fry it at 1.55V. In fact, most motherboards now use 1.55V by default for 1.50V RAM, due to a problem with one manufacturer not programing its RAM correctly. Try 1.60V, and don't be scared it's not that much.
a b } Memory
July 18, 2010 9:43:31 PM

According to JEDEC[2] the maximum recommended voltage is 1.575 volts and should be considered the absolute maximum when memory stability is the foremost consideration, such as in servers or other mission critical devices. In addition, JEDEC states that memory modules must withstand up to 1.975 volts before incurring permanent damage, although they are not required to function correctly at that level.

from DDR3 Wiki Page
July 19, 2010 2:20:01 PM

So i put the Dram voltage to 1.6v and tested it again this morning to make sure. Last night it passed Memtest86 no problems. I turned down the computer for the night (but power switch left on), this morning i ran a memtest86 and boom, errors,
errors per slot,
slot: 0 = 1
slot 1 = 5
Error confidence value : 45

I then shut down the computer completely and turn off power supply for 30 seconds, rerun memtest86 and voila it passes the test. So my computer will run flawless for 16 hours... then i will have to shut it down completely to reboot the whole thing...
Like I said, could it be ram? should i RMA it ?
a c 97 } Memory
July 19, 2010 3:03:47 PM

I suspect that your problem is connected to overclocking. Turn off all overclocking and run with defaule settings and see how you do.

July 20, 2010 3:38:14 AM

I am testing the Overclock theory right now. I will come back with an update. Everything is back to default! No overclock!
July 20, 2010 2:07:13 PM

Nope it was not the overclock! I tried memtest86 this morning and i failed again on test 5... i shut down computer and power supply, retry and it passes memtest86.

Could the power supply be the cause at this point ?
a c 97 } Memory
July 20, 2010 2:24:28 PM

There has to be a simple explanation.

Did you check for bios updates that might fix ram issues?

When you disconnect the psu, you may reset the bios. Leaving it plugged in will not. Is it possible that the motherboard battery is weak and causing problems?
A bad battery may cause bios settings to get disrupted.
July 20, 2010 2:29:59 PM

I am gonna check for a Bios update, however, if it's a bad battery in Motherboard, that would require to change motherboards right ?

Edit: Just checked for bios update, im up to date, the next bios is a BETA.
I really don't get it at this point and don't know what to do right now...
a c 97 } Memory
July 20, 2010 2:38:20 PM

jp6666 said:
I am gonna check for a Bios update, however, if it's a bad battery in Motherboard, that would require to change motherboards right ?

Edit: Just checked for bios update, im up to date, the next bios is a BETA.
I really don't get it at this point and don't know what to do right now...


Does the BETA bios address your issue?

The battery liiks like a nickel, it is a CR2032 3v battery. It is easily replaceable.

Is it possible that some sort of winows based overclocking is being invoked?
July 20, 2010 2:42:36 PM

Nah the Beta bios addresses audio problems.

I really doubt then any kind of windows based overclocking... not as far as i know!
a c 97 } Memory
July 20, 2010 2:53:16 PM

Is the ram on the motherboard's ram QVL list? Or, is the ram shown to be compatible with your motherboard on the ram vendor's ram configurator. If not, you may have a problem replacing either.

Are the two ram sticks inserted into the recommended slots? The motherboard manual will document the requirements.

I doubt that the problem is the PSU.

My best guess is the simple answer, the ram.
July 20, 2010 2:56:49 PM

If you mean if the ram is in the motherboard supported list, yes it is! On the gigabyte site, this exact ram is said to be compatible and working! And ya, i have it in the recommended slots.

Well i have ordered two more slips of ram, i will remove the current ram and if the other one works without problems, then i will RMA the current ram... if the new ram does not work.. then the pain in my but will continue...
July 20, 2010 4:51:46 PM

Well if that doesn't work then your only other option would be a new mobo
July 23, 2010 4:10:00 PM

I received yesterday a new set of ram, same brand and kind, just replaced the ones in the PC with the ones i had received, tested it under exact same conditions, and up to now no errors at all. PC was off all night, ran memtest86 this morning (did not shut down power supply to reboot everything like i had to with other set) and everything seems A-OK.

Conclusion: Defective ram ! I will RMA it in the next week, i am just gonna wait a few days more to make 100 % everything is perfect with the new ram before RMAing the old one.

Now bring on Starcraft 2!!
July 23, 2010 5:07:53 PM

Glad you got things sorted out :) 
!