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Windows 7: 4GB memory, only 2GB usable?

14 May 2010   #11
Microsoft MVP


Just in case, test your memory using memtest86 boot CD overnight or for at least 6 passes.

Swap your memory sticks.

My System SpecsSystem Spec
14 May 2010   #12
Phone Man

Windows 8.1 Pro w/Media Center 64bit, Windows 7 HP 64bit

The link in his post shows an ASUS Laptop.

4GB memory, only 2GB usable?-asus-ul20a.png

Here is a link to the specs.
ASUSTeK Computer Inc.

It should have come with 2GB of ram and can be upgraded to 4GB.
I wonder if he got the right upgrade chip.


My System SpecsSystem Spec
15 May 2010   #13

Windows 7 64 bit SP1

Since this is a netbook, it seems likely that it shipped with Windows 7 starter edition, which has a 2GB memory limitation.

However, the image seems to indicate that it's a 64 bit OS installed and i'm under the impression that Windows 7 starter only comes in 32 bit version, so that seems confusing.

The "Get more features with a new edition of Windows 7" link at the top also seems to indicate it's Windows 7 Starter.. Maybe Asus is somehow shipping a 64 bit Starter edition?

Scratch that, this model seems to ship with Windows 7 Home Premium, so that shouldn't be a problem. I'm going to have to go with improperly installed RAM, Damaged RAM, or Incorrect RAM as the answer.

One other thing to try:
  1. Press Windows Key + R and type msconfig into the run command box.
  2. On the "Boot" tab, click on advanced options.
  3. Make sure the box labelled "Maximum Memory" is NOT ticked. If it is, untick, save and restart.
My System SpecsSystem Spec

15 May 2010   #14

Windows 7

Or the chipset is kaput.
My System SpecsSystem Spec
15 May 2010   #15

Windows 7 x64 / Same

if it hasn't been mentioned, make sure your chipset drivers are installed and up to date.
My System SpecsSystem Spec

 4GB memory, only 2GB usable?

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