Frequently you get a message "Windows is increasing your virtual memory" or "Your virtual memory is too low"

This may be the problem when your RAM is low and during memory taxing applications, windows has to increase the default setting of your virtual memory. So what you do is to tweak the virtual memory setting yourself to a higher value. Virtual memory is just a section of the hard disk which your operating system uses as a RAM. This is a critical feature because it allows the OS to use more RAM than it actually has, allowing users to use more robust programs without having to upgrade their memory.

Right click 'My Computer' and goto 'properties'.
Click the 'advanced' tab, and click 'settings' under 'performance' section.
Again click 'advanced' tab, and click 'change' under 'virtual memory' section.
Now change the max and min value in 'custom size'. Check with the recommended size. An increase of 200 MB is desirable.

If you get the message again, increase your size further or the time has come for an increase of your RAM.