Adding RAM

Discussion in 'Computers and The Internet' started by Pepik, May 2, 2007.

  1. Pepik

    Pepik Banned

    I have an HP Omnibook 500 running Xubuntu 7.04. Before it had 256+128 megs RAM and I just replaced the 128MB with another identical 256MB. But it is showing only 256MB total. Any ideas? I don' know how to figure out what the problem is.
  2. sentient

    sentient Senior Member

    basically the fact its a something 500 would suggest to me its a pentium 3 500
    and a lot of pentium 3's can only take 384meg ram
    only a handfull of pentium 3's were ever designed to take more - certainly nearly every p3/500 will have a 384 limit even most p3 800's - it was only when they rolled out the 1 gig p3's that you started getting the ability to add more, really.

    I am surprised though that it fails to register the extra ram it should have registered something I believe.

    after putting the new memory in did you go to the bios and set it to refresh the bios on the next boot - otherwise it just reads the bios from the bios cache

    Ok if you did then take out the first 256 bar that was with the 128 bar originally, and now
    put the new one in its place and test that - if it works it means you have a 384 meg limit on that machine
  3. Pepik

    Pepik Banned

    I think its a pIII 700mhz with 512MB RAM limit.

    I'll try to get a look at the bios.

  4. Could be a hardware issue. I'd suggest trying a different stick of ram, if that works, you know what the problem was. Also, if it had a 384 limit, it would read up to that, and ignore the leftover ram. Did you install it securely, with the pc turned off?
  5. Adderall_Assasin

    Adderall_Assasin Senior Member

    i tried adding 512 to my old 600mhz P3. it wouldnt boot up at all. it just said memory error. so you should do what sentient said. if your limit is 512 then you inserted the memory wrong or maybe it is a bad chip.
  6. raysun

    raysun D4N73_666 4861786f72

    It could be a hardware problem either way you maybe should do some tests to check if it is not damaged.
  7. dodger988

    dodger988 Member

    If you can, open up your case and look for any identifying numbers or names on the motherboard. Should help us diagnose the problem. If your hitting a memory ceiling it'll be the mobo. Also, tell us the exact speed/model of the memory you got.
  8. Theres a new memory fixer out called hammer version 3
    you could try using it on your laptop - beware though if you use hammer on a non hammer aware pc it can break it beyond repair

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