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HELP!!! Can only use 3 of my 2Gb DIMMS at once

post #1 of 10
Thread Starter 
I have 4 x 2GB Samsung 1333MHz and i use to be able to use all 4 of them but one day when i went to turn on my computer it wouldnt post. So i tried to detect the problem and it was my ram.

If i take 1 out and leave the other 3, it would boot and work. At first i thought that the specific DIMM was broken but i can use any Combinations of DIMMs as long as i have only 3 Installed. I also thought that the specific RAM slot on my motherboard was broken but i can use all of them as long as there are only 3 DIMMs installed.

Does anybody have any ideas that could help fix this problem??

BTW im talking about my sig rig so my motherboard is th P7P55D Pro.
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The Freshmaker
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post #2 of 10
Have you tired all the sticks? Maybe that specific stick is bad?
    
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post #3 of 10
Thread Starter 
Quote:
Originally Posted by iamtwan View Post
Have you tired all the sticks? Maybe that specific stick is bad?
Yes, when i try all the sticks the computer doesnt post. I know that the specific stick isnt bad because i can swap it with one of the other 3 and it works. I just cant get a post with all 4 sticks in.
The Freshmaker
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The Freshmaker
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post #4 of 10
You have to check the RAM slots to make sure you have no bent terminals and they are fully seated. If they are fine, then pull the CPU and make sure none of the 1156 pins are bent.
     
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post #5 of 10
Thread Starter 
Quote:
Originally Posted by ezveedub View Post
You have to check the RAM slots to make sure you have no bent terminals and they are fully seated. If they are fine, then pull the CPU and make sure none of the 1156 pins are bent.
Yeah ive checked that they are fully seated. Havent checked to see if the pins are bent though.
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post #6 of 10
Did you try resetting CMOS? Maybe you have a OC setting or something not default that makes 4 sticks unstable. If a CMOS reset doesn't do it then boot up with 3 sticks and increase RAM voltage some and see if that helps.
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post #7 of 10
Quote:
Originally Posted by Mentoss View Post
Yeah ive checked that they are fully seated. Havent checked to see if the pins are bent though.
It sounds odd, but I had issues for while. I finally yanked out my I7 CPU and looked carefully with a flashlight and found 4 pins moved. Ever since that, I've zero issues and my OC has been rock stable.
     
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post #8 of 10
Thread Starter 
Quote:
Originally Posted by Markisa View Post
Did you try resetting CMOS? Maybe you have a OC setting or something not default that makes 4 sticks unstable. If a CMOS reset doesn't do it then boot up with 3 sticks and increase RAM voltage some and see if that helps.
I havent got an overclock running on the sticks. I might try increasing the ram voltage but im cautious to do so cause i dont wanna damage the sticks.
The Freshmaker
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The Freshmaker
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post #9 of 10
Quote:
Originally Posted by Mentoss View Post
I havent got an overclock running on the sticks. I might try increasing the ram voltage but im cautious to do so cause i dont wanna damage the sticks.
If you stay below 1.65v you should have no troubles. Worth a shot :0
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The Beastie
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post #10 of 10
Thread Starter 
Quote:
Originally Posted by netwalker View Post
If you stay below 1.65v you should have no troubles. Worth a shot :0
Alright i'll give it a go.
The Freshmaker
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The Freshmaker
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CPUMotherboardGraphicsRAM
Core i5 750 @ 4GHz 1.3v Asus P7P55D Pro 2x Galaxy GTX 570 Sli 4 x 2GB Gskill Trident (1600MHz) DDR3 
Hard DriveOSMonitorKeyboard
Corsair F120GB SSD (OS), 1Tb + 1Tb Raid 0, 2TB Windows 7 Ultimate 64-bit Alienware Optx AW2310 23" 120Hz (1920x1080) Microsoft Sidewinder X4 
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