If you have a problem about running out of memory during a heavy load on your computer, this little tweak will really help you out and will increase your PC peformance better than you expected.
right click My Computer> go to the tab Advanced > click Settings under Performance.
then go to Advance tab.
from the Advance tab change to 'System cache' from 'Programs' in MEMORY USAGE, then click apply.
this will make your computer execute faster through system cache.
Then go down to Virtual memory and click change. (make sure you partitioned your hard disk)
unset the paging file from System C.
*set the paging files only to another drive not the System C.
in this picture, I set the pagefile to D, and enter in Custom size 1024 both for Iniatial size and Maximum size and click Set.
click ok then, reboot.
Your Computer will surely increase performance. ENJOY!!!!