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Upgrading my elitebook8540w ram to 8GB

HP Recommended
hp elitebook 8540w
Microsoft Windows 7 (32-bit)

I installed 4GB ram to my elitebook 8540w to increase the ram to 8GB , the laptop recognize the extra ram but it says only 2.99 usable. why what happened to my other ram

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HP Recommended

Hi:

 

If you are running a 32 bit operating system like you posted, the maximum memory a 32 bit operating system can 'see and use' is 4 GB.

 

So, 2.99 GB usable out of 4 GB is pretty normal, the 1 GB going to support the shared graphics memory.

 

In order for Windows to 'see and use' most of the 8 GB  of memory, you need to install a 64 bit operating system.

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