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Mysterious Disappearing Ram

So, I have a problem. I had 4 gb of ram, now my computer is only reading 2. It is espiecally strange since my first guess would be that one of the sticks fried somehow. However, this motherboard requires both sticks to be of the same gb and both plugged in to work. So if one fried, the other shouldn't work either.

I just upgraded to Windows 7 64bit a couple of months ago, and I wonder if that has something to do with it.

My computer is homebuilt with these specs:

Intel Pentium D CPU 3.4 GHZ
It is reading 2.00 gb of Ram. I believe it is DDR2 if I remember correctly
Graphics card is a SPARKLE SFPX98GTX+512D3 GeForce 9800 GTX+ 512MB 256-bit GDDR3
Motherboard is: GIGABYTE GA-EP45-UD3L LGA 775 Intel P45 ATX Intel

It was reading the full 4 gb after installing Windows 7. Now it is not, so it probably isn't directly related? Any ideas on why it isn't reading it fully?
6 answers Last reply Best Answer
More about mysterious disappearing
  1. Maybe one of the DIMMs is not installed correctly.

    Download and install CPUZ and post the memory tabs information.

    CPUZ's site is down curently, but get the download here and install it.

    http://download.cnet.com/CPU-Z/3000-2086_4-10050423.html
  2. Type DDR2
    Channel # single
    Size: 2048 mb

    DRAM 4.00 MHz
    FSB:DRAM 1:2
    CAS#Latency: 5 clocks
    RAS# to CAS delay: 5 lcocks
    tRP: 5clocks
    tRAS: 18 clocks
    TRFC: 52 clocks
    CR: 2T

    Thanks.

    It says single channel, so I guess that means one of the sticks did fry, eh? Or maybe fell out of place
  3. Best answer
    Try turning the systen off and then carefully reinserting the two DIMMs properly n the slot. The RAM only fits one way and must be locked down. (The RAM only fits in the slot properly one way.)
  4. Okay sounds good. It was working, and was in there right before, but I think I moved it around and something snapped out or something.
  5. Yes, try reseating them. I have experienced where a stick just "disappeared". All the technician had to do was remove the stick and put it back in and it starting seeing it again.
  6. Best answer selected by thedonquixotic.
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