• Windows Vista and Windows 7:
  1. Hold the 'Windows' key and press 'Pause | Break'. 
or
  1. Click 'Start'.
  2. Right click 'Computer'
  3. Choose 'Properties'. 

  • Windows XP:
  1. Click 'Start'
  2. Right click 'My Computer'.
  3. Choose 'Properties'   

               
 
 
 
 
  • Windows 2000:


     

    1. Right-click on the My Computer icon
    2. Select Manage from the menu
    3. On the Computer Management screen, select System Summary
    4. The preview pane will show this information

  • Windows NT:


     

    1. Open Windows Explorer.
    2. Go to Help, about Windows NT.
      This shows the version, build, service pack number, as well as how much memory is installed.
    3. Select Start ð Programs ð Administrative Tools (Common) ð Windows NT Diagnostics.

      The system tab indicates the size of processor the workstation is running (megahertz - mhz).

  • Windows 9x:


    1. Select Start ð Settings ð Control Panel ð System.
    2. Select the General tab which lists all the relevant information.
    3. To determine the processor speed, reboot the machine and monitor the POST (Power On Self Test) which indicates the processor type, speed, and installed RAM as the workstation prepares to boot.