Virtual Memory too low Warning Trouble in win xp and vista

Manually manage computer memory loadTOCNode(3, 'moreinformation'); When your computer's physically installed random-access memory (RAM) is running low, Windows adds available memory by using a paging file, generally known as virtual memory, on the hard disk to simulate physical RAM. By default, the virtual memory paging file that is created during installation is 1.5 times the physical RAM on your computer. Therefore, a computer that has 1GB of installed RAM will have 1.5GB of virtual memory.

You can manually change the size of the paging file to make it larger or smaller. You can also optimize virtual memory use by dividing the file space between multiple drives and by removing allocated space from slow or heavily accessed drives. To optimize your virtual memory space, divide it among as many physical hard drives as possible. When you select drives, follow these guidelines:

• Try to avoid having a paging file on the same drive as the system files, usually drive C.
• Avoid putting a paging file on a fault-tolerant drive such as a mirrored volume or a RAID-5 volume. Paging files do not require fault tolerance, and some fault-tolerant computers experience slow data writes because they write data to multiple locations.
• Do not put multiple paging files on different partitions on the same physical disk drive.

How to manually change the size of the virtual memory paging file loadTOCNode(4, 'moreinformation'); You must be logged on as an administrator or as a member of the administrator's group to complete this procedure. If your computer is connected to a network, network policy settings may prevent you from completing this procedure.

To manually change the size of virtual memory, follow these steps:

1. Click Start, click Run, type sysdm.cpl in the Open box, and then press ENTER.
2. Click the Advanced tab, and then under Performance click Settings.
3. Click the Advanced tab, and then under Virtual memory click Change.
4. Under Drive [Volume Label], click the drive that contains the paging file that you want to change.
5. Under Paging file size for selected drive, click Custom size, type a new paging file size in megabytes (MB) in the Initial size (MB) or Maximum size (MB) box, and then click Set.
6. Click OK to close the dialog box and apply changes.

Note After you change the size of the paging file, you may be prompted to restart Windows. If you are prompted to restart, the changes will not take effect until Windows is restarted.

Notes

• To have Windows select the best paging file size, click System managed size. The recommended minimum size is the same as 1.5 times the RAM on your computer, and 3 times that figure for the maximum size. For example, if you have 256 MB of RAM, the minimum size is 384 MB, and the maximum size is 1152 MB.
• 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 the same as 1.5 times the RAM on your computer. It is good practice to leave the paging file at its recommended size as performance can decrease if a paging file is too large. However, you may increase its size if you frequently use programs that use lots of memory, such as graphics programs or games.
• We strongly recommend that you do not disable or delete the paging file because this can lessen the computer's performance. However, if you decide to delete a paging file, set both the initial size and the maximum size to zero, or click No paging file.

How to manually optimize the memory usage loadTOCNode(4, 'moreinformation'); You can optimize your computer's memory usage to reflect your specific needs. If your computer is used as a workstation instead of as a server, you can increase performance by devoting more memory to your programs. Your programs will work faster and the system cache size will remain the default size that was included with Windows XP. Or, you can set aside more computer memory for a larger system cache if your computer is used primarily as a server, or if you use programs that require a large system cache.

1. Click Start, click Run, type sysdm.cpl in the Open box, and then press ENTER.
2. Click the Advanced tab, and then under Performance click Settings.
3. Click the Advanced tab, and then under Memory usage use one of the following methods:
   • Click Programs if you use your computer primarily as a workstation instead of as a server. This option allocates more memory to your programs.
   • Click System cache if your computer is used primarily as a server or if you use programs that use a large system cache.
4. Click OK to save preferences and close the dialog box.

You may refer to this link http://support.microsoft.com/kb/308417

Virtual memory is a setting, physical memory is something you can replace. Right click My Computer, choose Properties. Look on the General tab to see what you have for RAM. You should have at least 1GB. Less than that you'll have performance issues. 2GB would be good. More is better.
Virtual memory is a setting, and should be 1.5 to 3 times what you have for physical memory. Right click My Computer, choose Properties. Choose the Advanced tab. Under Performance, choose Settings. On the Advanced tab under Virtual Memory, click Change. For initial size, enter the number in MB that is 1.5 times your physical memory. (1GB = 1024 MB) For maximum size, enter the number in MB that is 3 times your physical memory.
Hope this helps! Good luck.

Windows is probably constantly trying to create virtual memory using the hard drive's free space. Buy more RAM and/or create a larger virtual memory file. If it's Windows XP, try right-clicking on My Computer, Properties, Advanced, Performance, Advanced again, Change (under Virtual Memory), increase the Initial Size to AT LEAST what is "recommended" lower down on that screen but no more than 1 1/2 times the actual physical RAM, then click Set.

this is virus instaled on computer bios or defective memory boards.
1st replace memory, and check-it.
2nd find a original bios on IBM website, and flash-it.