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Installed Memory (RAM): 12.00gb (3.25gb usable) 64-bit. Help!

I have an AcerX3400g. I bought some ddr3 ram and plugged it in. Then i turned on my computer, and it says this: Installed Memory (RAM): 12.00gb (3.25gb usable) Help? i have an Windows Home Premieum and a 64-bit operation system. What do i do?!
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  1. Does you owner's manual tell how much RAM the mobo/BIOS supports?
  2. Best answer
    Try running MSCONFIG. Then select the boot tab. Click Advanced Options. At the top right you will see an option called Maximum Memory. Make sure that is unticked. If you had to untick it you will need to reboot. See if all memory is now available.
  3. Wamphryi said:
    Try running MSCONFIG. Then select the boot tab. Click Advanced Options. At the top right you will see an option called Maximum Memory. Make sure that is unticked. If you had to untick it you will need to reboot. See if all memory is now available.



    Thank you so much! Now i have 11gigs of ram to use! Thanks so much!
  4. No worries Dude.
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