Installed 1.5 GB memory, but showing that 512 MB is usable

I have Lenovo 3000 N Series 100: operating system windows 7 Professional 32 bit Service Pack 1...  1.5 GB of memory, I installed in my laptop, but when I go to my computer and its properties, its shows the installed memory 1.5 GB (512 MB usable) why it shows like this. Is this a serious problem or not. Please solve the problem.

Hey, I found the solution, hope it will work for you too...

There could be two possibilities with this problem.

1 may be that the maximum memory is not enabled in the BIOS.
2 maximum memory is not configured in the advanced boot options.

BIOS.
You can check with the manufacturer of your BIOS, on how to activate the maximum memory.

Check the advanced startup options.
1. Click Start, in the search bar type msconfig and press to enter.
2. System Configuration window appears on the screen.
3. click on the tab named "boot".
4. click on "Advanced Options" and uncheck the box 'memory Maximum.

It will be useful.

Tags: Lenovo Notebooks

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