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    ram upgrade not working

    Discussion in 'Hardware Components and Aftermarket Upgrades' started by krusty32, Jun 14, 2011.

  1. krusty32

    krusty32 Newbie

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    I have Acer Aspire 5745G runs win7 premium 64 bit.Onboard had 2 x 2gb sticks ram with 2 spare slots.I bought 2 x 2gb sticks making total of 8gb.
    Bios says 8gb..System says 8gb(3.94 usable)..Task Manager says 4gb.

    Why is it not seeing or using the 8gb when it says it has it?

    Thank you all
     
    krusty32, Jun 14, 2011
    #1
  2. pengy_666

    pengy_666 Notebook Evangelist

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    Sounds like it's only 32bit installation.

    Run something like sisoft Sandra and check.
     
    pengy_666, Jun 14, 2011
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  3. krusty32

    krusty32 Newbie

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    Cheers i ran that and says 64 bit.
     
    krusty32, Jun 14, 2011
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  4. tilleroftheearth

    tilleroftheearth Wisdom listens quietly...

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    Must be your video card (or some other hardware) that is reserving that RAM (space) for it's own use).

    Start Windows Task Manager, click Resource Monitor, click the Memory tab and see what it shows for Hardware Reserved in the bottom lefthand corner.
     
    tilleroftheearth, Jun 14, 2011
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  5. krusty32

    krusty32 Newbie

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    Has 1gb graphics not shared.
    says hardware reserved 4162 in use 1577 standby 1260 free 1113
    Thanx
     
    krusty32, Jun 14, 2011
    #5
  6. tilleroftheearth

    tilleroftheearth Wisdom listens quietly...

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    You can try to mix the RAM in the slots and see if that helps.

    (Make sure you unplug the power cord and take out the battery when switching RAM sticks).

    You can also try:

    Start, type msconfig, hit enter, click the boot tab, click advanced options and uncheck 'Max Memory'.

    Oh, and reboot, of course. ;)

    Good luck.
     
    tilleroftheearth, Jun 14, 2011
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  7. krusty32

    krusty32 Newbie

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    Thank you I pulled out ram and filled 1 and 2 came up 4gb fine.
    Put another in slot 3 showed 6gb with 66MB hardware reserved,fine.
    put last stick in slot 4 showed 8gb 1064 hardware reserved.
    Thanx problem solved.
    BTW the boot tab thing didn't work.
     
    krusty32, Jun 14, 2011
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  8. tilleroftheearth

    tilleroftheearth Wisdom listens quietly...

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    Just make sure to still test the RAM - overnight is not over doing it.

    Glad to have helped.
     
    tilleroftheearth, Jun 14, 2011
    #8