Virtual Memory low
This is a question that comes up when a computer get older, the user downloads too many things, or asked more today of the computer than yesterday. You will get a Virtual Memory low message on a computer that is running Windows requires more memory when then there is installed in the system to run that program. To balance this because it assumes it is not a permanent situation, it uses a small section of the hard drive for this purpose. This is called Virtual memory. If the page.sys file is too small, then you will get a warning that the system cannot perform the operation that you have requested because insufficient Virtual memory is not available. The simple fix is to enlarge the size of your virtual memory. The long-term fix is you are going to need more memory. To move forward follow these steps:
Right click My Computer
Scroll down click on Properties
In the System Properties window
Click the Advanced tab
Under Performance, click Settings
In the Performance Options window
Click on Advanced button
Under Virtual memory and click Change
Increase the size of the Paging file so that it is at least twice the size of your installed Memory
You can also choose increase the size to the Maximum.