Follow the steps given below :-
1 Hold down the ‘Windows’ Key and Press the ‘Pause/Break’ button at the top right of your keyboard.
Another way is Right-Clicking ‘My Computer’ and then Select ‘Properties’.
2 Click on the ‘Advanced’ tab.
3 Under ‘Performance’, click ‘Settings’.
4 Then click the ‘Advanced’ tab on the button that pops up.
5 Under ‘Virtual Memory’ at the bottom, click ‘Change’.
6 Click the ‘Custom Size’ button.
7 For the initial size (depending on your HD space), type in anywhere from 1000-1500 (although I use 4000), and for the Maximum size type in anywhere from 2000-2500 (although I use 6000).
8 Click ‘Set’, and then exit out of all of the windows.
9 Finally, Restart your computer.
10 You now have a faster computer.
Note:How much the computer gets faster will also depend on your system configuration.