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Not all of my memory is usable

Last response: in Memory
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January 2, 2014 5:06:23 PM

So here is my situation:
Yesterday I replaced the stock Intel cooler for my i7-870 with a water cooled system. After installing it, my computer would turn on and off rapidly, so I immediately removed the power. Come to find out, the motherboard wasn't accepting the fans in one of its fan power slots. After moving the radiator fan to a different power slot, my computer booted fine.

About an hour after messing with my computer, I noticed a performance dropped and found that my computer only was reading 4gb of my 8gb of memory. After some troubleshooting, I essentially switched the sticks with each other, and my computer now reads all 8gb with only 4gb usuable.

Here is a picture for reference:


Here are my system specs if needed:
Intel i7 870
Kingston 8gb (2x4gb) DDR3
Windows 7 Home Premium 64-bit Operating System
ATI ASUS R9 280x
Intel Corporation DH55TC (XU1) Motherboard

More about : memory usable

January 2, 2014 5:11:36 PM

You're probably not using a 32-bit OS and not a 64-bit. If you're really using a 64-bit OS you could try testing a different motherboard or different memory sticks.
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January 2, 2014 5:20:43 PM

Rockerbacon said:
You're probably not using a 32-bit OS and not a 64-bit. If you're really using a 64-bit OS you could try testing a different motherboard or different memory sticks.


I have had this computer for a year and it has ran fine with 8gb of memory. I don't think this would be the problem.
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a b } Memory
January 3, 2014 6:40:41 PM

your bios is the latest one 0048 also check if the memory are on the same dual channel slot .
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January 3, 2014 6:55:28 PM

scout_03 said:
your bios is the latest one 0048 also check if the memory are on the same dual channel slot .


They are. I think that Channel A Slot 0 is bad. I don't know where to go from here though.
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a c 2179 } Memory
January 3, 2014 6:59:05 PM

Try in A1 and B1
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January 3, 2014 7:09:42 PM

Tradesman1 said:
Try in A1 and B1


It is funny you said this because I literally just did this but got a beeping sound from my computer and it didn't boot.
So what's next?
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a c 2179 } Memory
January 3, 2014 7:16:42 PM

Can try blowing out the slots with compressed air ( or take a real deep breath ;)  ), also clean the DRAM contacts with rubbing alcohol and a foam swab or clean cloth
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January 3, 2014 7:21:37 PM

Tradesman1 said:
Can try blowing out the slots with compressed air ( or take a real deep breath ;)  ), also clean the DRAM contacts with rubbing alcohol and a foam swab or clean cloth


I can try that, but probably won't have access to compressed air until tomorrow.
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Best solution

a b } Memory
January 3, 2014 7:24:07 PM

i use a white erase to clean my contact just sliding it on top without pressure on it http://www.officedepot.com/a/products/930065/Prismacolo...
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