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August 31st 2012 5:13 am

I've uprgraded my laptop's RAM to 6GB but when I checked properties of my system it says only 3Gb is usable. Why is that happening?

I have a Dell Inspiron N4030. It came with 2GB of RAM and is upgradeable up to 6GB. I brought a Transcend 4GB DDR3 RAM and installed it. I checked BIOS of my computer and it shows that total RAM installed is 6GB but when I check system properties it says 6GB RAM is installed but only 2.99 GB is usable. Why is that Happening? Is there anyway through which I can increase the usable RAM?
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DhaatuPramukh's pick

Most likely you are using a 32bit OS, which only supports a maximum of about 3GB of RAM. To check if you are running a 32 bit version of windows do the following.

(on windows vista or windows 7)

  1. click the Start button , then Control Panel, click System and Maintenance, and then click System.
  2. Under System, you can view the system type.

If you are running Windows XP or older there is 99.5% chance you are running the 32 bit version.

So to use all of your new RAM, you will unfortunately have to upgrade your version of Windows to a 64bit edition.
If you ARE already running a 64 bit version of windows something is horribly horribly wrong.
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