How to increase Virtual Memory Windows 2000, XP, Vista, 7, Win8 ?

To change the size of the virtual memory paging file

You must be logged on as an administrator or a member of the Administrators group in order to complete this procedure. If your computer is connected to a network, network policy settings may also prevent you from completing this procedure.

1.	Open System in Control Panel.
2.	On the Advanced tab, under Performance, click Settings.
3.	On the Advanced tab, under Virtual memory, click Change.
4.	Under Drive [Volume Label], click the drive that contains the paging file you want to change.
5.	Under Paging file size for selected drive, click Custom size, and type a new paging file size in megabytes in the Initial size (MB) or Maximum size (MB) box, and then click Set. If you decrease the size of either the initial or maximum page file settings, you must restart your computer to see the effects of those changes. Increases typically do not require a restart.

Note

•	To open System, click Start, click Control Panel, click Performance and Maintenance, and then click System.
•	To have Windows choose the best paging file size, click System managed size.
•	For best performance, do not set the initial size to less than the minimum recommended size under Total paging file size for all drives. The recommended size is equivalent to 1.5 times the amount of RAM on your system. Usually, you should leave the paging file at its recommended size, although you might increase its size if you routinely use programs that require a lot of memory.
•	To delete a paging file, set both initial size and maximum size to zero, or click No paging file. Microsoft strongly recommends that you do not disable or delete the paging fil

Increase Virtual Memory on Vista
To increase the initial virtual memory on your computer, with Windows Vista:

1.  Open Windows Start

2.  Click Control Panel. On the left, select Classic View.

3.  Click the System icon.

3.  On the left, select the Advanced System Settings.

4.  Under Performance, click Settings.

5.  In Performance Options, select the Advanced tab.

6.  Under Virtual Memory, click Change.

7.  In Virtual Memory, uncheck Automatically manage paging file size for all drives.

8. Check Custom size, and type in the sizes you want.

  Although there is no single right answer, we often recommend these sizes:

  Initial minimum: 1536 or 3072 or 4096

  Maximum: 4096

8.  Click Set, then OK, and restart your computer.


Increase Virtual Memory on XP
To increase the initial virtual memory on your computer, with Windows XP:

1.  Open Windows Start

2.  Right-click on My Computer and select Properties.

3.  Select the Advanced tab.

4.  Under Performance, click Settings.

5.  In Performance Options, select the Advanced tab.

6.  Under Virtual Memory, click Change.

7.  In Virtual Memory, check Custom size, and type in the sizes you want.

  Although there is no single right answer, we often recommend these sizes:

  Initial minimum: 1536 or 3072 or 4096

  Maximum: 4096

8.  Click Set, then OK, and restart your computer.

Increase Windows 2000

1. Right-click My Computer and then click Properties.
2. In the System Properties dialog box, click Advanced
3. Click Performance Options.
4. In the Virtual memory pane, click Change to increase the paging file.
   
   Windows 2000 requires an Initial value of 126 MB for debugging.
5. After you change the setting, click Set, and then click OK.
6. In the System Control Panel Applet dialog box, click OK to the following message:
   The changes you have made require you to restart your computer before they can take effect.
7. Click OK to close the Performance Options dialog box, and then click OK to close the System Properties dialog box.
8. When you are prompted to restart your computer, click Yes.