Windows 7 64bit - 16GB Ram utilizing only 4GB?

memory windows-7

I've got 16GB ram and running Windows 7 64bit, but for some reason I think it's utilizing only 4GB?

If I go into properties it says Installed memory: 16.0 GB, but if under some loads for example starting Dreamweaver, Photoshop and some other programs, a Windows error/notice pops up suggesting I should close some programs to prevent information loss due to low memory. If I open the task manger in that situation and add up all the running processes Memory usage, I always seem to end up at 4GB ram.

Let's say I start Photoshop 4 times, each of it will consume 1GB of the memory, this is when Windows will give me the warning that I'm running low on memory.

In msconfig, the memory limitation is not set.

Is there anything else preventing it from utilizing all of my RAM?

Image of the computer properties window enter image description here


Go into your BIOS and look for a setting called "memory remapping". Make sure it is on.

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