Adding memory and getting none??

Discussion in 'General Hardware' started by Zedric, Dec 20, 2004.

  1. Zedric

    Zedric NTFS Guru Folding Team

    Messages:
    4,006
    Location:
    Sweden
    I have a slightly strange problem with an Abit BD7II-RAID mobo. It has three memory slots and supports up to 2 GB RAM. I now has 1 GB RAM (2x512). When I add a third 512 module (to get 1.5 GB) the computer still reports only 1 GB total. If I swap all the memory around in all combinations I still get 1 GB total. What's going on? What am I missing?

    The memory is DDR2100 btw.
     
  2. ming

    ming OSNN Advanced

    Messages:
    4,252
    Location:
    UK
    bad memory?
     
  3. Tittles

    Tittles Dabba Dooba Political User

    Messages:
    6,344
    Location:
    Muskegon, Michigan
    Is it the same brand and all that as the current sick(s) have? If not then that might be your problem
     
  4. ming

    ming OSNN Advanced

    Messages:
    4,252
    Location:
    UK
    should make a difference.. i've had different brands, even had one with ECC and one without.... they both worked.
     
  5. toretto

    toretto Mentally Absent

    Messages:
    226
    Location:
    Mankato, Minnesota, USA
    Update your bios, half the time it can support it, but only with a bios update.
     
  6. Zedric

    Zedric NTFS Guru Folding Team

    Messages:
    4,006
    Location:
    Sweden
    ming: It's not bad as it works in any pair combination out of the three memory modules, just not all three.

    TittleBitties: I'll check the brand, it's most likely all Twinmos but I'm unsure (and I don't have the computer here right now).

    toretto: Good point, I'll try that.
     
  7. Dublex

    Dublex Quazatron R6 droid

    Messages:
    624
    Location:
    Hertfordshire, UK
    Is the slot itself working? It might not be the RAM - it could be something to do with the memory slot itself. Unlikely but its worth a shot.
     
  8. Ohzopants

    Ohzopants My mom thinks I'm cool

    Messages:
    165
    Location:
    Montreal
    i'm not sure about this, but if your current 1GB (2x512) is set to use dual channel, it may ignore a stick that is unpaired.
     
  9. lancer

    lancer There is no answer! Political User Folding Team

    Messages:
    3,093
    Location:
    FL, USA
    I was going to say the same as ohzopants, check your bios or switch settings on your motherboard and check that dual channel is not enabled if in fact you have it, if so it will only recognize two sticks, although i doubt a three dimm slotted mobo would have dual channel
     
  10. Zedric

    Zedric NTFS Guru Folding Team

    Messages:
    4,006
    Location:
    Sweden
    The slot is fine since combinations 1-2, 1-3, 2-3 work (as far as I know, will double check). The board does not support dual channel.
     
  11. Sazar

    Sazar F@H - Is it in you? Staff Member Political User Folding Team

    Messages:
    14,905
    Location:
    Between Austin and Tampa
    this is generally the best thing to do...
     
  12. dreamliner77

    dreamliner77 The Analog Kid

    Messages:
    4,702
    Location:
    Red Sox Nation
    Some boards only support 3200 mem in 2 slots.
     
  13. vern

    vern Dominus Political User Folding Team

    Messages:
    1,571
    Location:
    Minnesota, USA
    Did you try running with only the new memory and see if it works first?
     
  14. tibboh

    tibboh Arte et Marte

    Messages:
    235
    Location:
    Preston England
    Just checked the manual on my Abit BE7-Raid, and its the same setup I have as you at present (2Gb max). The only thing in it I can see is that it says DIMM2 & DIMM3 are sharing - so im not sure what that signifies when all 3 slots are full. Unfortunately I don't have a spare stick of memeory, or else I
    would stick it in and check for you.

    Hope u resolve it
     
  15. Zedric

    Zedric NTFS Guru Folding Team

    Messages:
    4,006
    Location:
    Sweden
    Vern: Yes, it works

    tibboh: Yes I saw that too. I have no idea what it means or where to find the explaination. Just using slots 2 and 3 still works the same as 1 and 2...

    The computer was needed elsewhere so I haven't been able to experiment anymore, but bios update is nexxt on the list.