Virtual Memory:-Virtual Memory is a feature of an operating system that enables a process to use a memory (RAM) address space that is independent of other processes running in the same system, and use a space that is larger than the actual amount of RAM present, temporarily relegating some contents from RAM to a disk, with little or no overhead.
You can use a USB flash drive to store your virtual memory.
Goto to "My Computer" select "Properties"
Now click the "Settings" button in the Performance section.Then click on the "Advanced" tab.
Click on "Change"button near the bottom of window and select the drive letter where your windows is installed(normally c:/)
Now customize the value as double(multiply by 2) of "Intial Size(MB)" and "Maximum Size(MB)"
Finally click on the "Set" button then click "OK" and restart your PC to make changes.