How to Remove a System Cache

Written by rita wood
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How to Remove a System Cache
How to remove the system cache. (Computer image by Altmann from

Windows 7 has three different types of cache: memory cache, DNS (Domain Name System) cache and Thumbnails cache. Cache is a temporary place to keep information so it can be retrieved faster on request. Clearing the cache will free up system memory, free up space on the hard drive and can fix Internet connection problems. You can clear cache in Windows 7 very easily and in just a few short steps.

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  1. 1

    Click "Start" and type "Command Prompt" in the Search field.

  2. 2

    Right-click on "Command Prompt" under Programs at the top of the screen and select "Run As Administrator." A black Administrator Command Prompt window will open.

  3. 3

    Type "ipconfig /flushdns" and hit "Enter." You will get a message that the DNS Resolver Cache has been successfully flushed.

  1. 1

    Right click on the desktop and click "New" and then "Shortcut."

  2. 2

    Type "%windir%\system32\rundll32.exe advapi32.dll,ProcessIdleTasks" in the "Type the location of the item" field and click "Next."

  3. 3

    Name the shortcut something like Clear RAM or Clear Memory Cache and click "Finish." Open the shortcut and it will automatically clear the memory cache. You will not see a window open or anything happening when it is clearing the memory cache. Keep this shortcut on your desktop and you can run it anytime you want to.

  1. 1

    Click "Start," type "Disk Cleanup" in the search field and press "Enter." Disk Cleanup will scan for useless files. When it is finished, the Disk Cleanup window will open. This scan will take a few minutes.

  2. 2

    Check the "Thumbnails" option in the Disk Cleanup window and click "OK."

  3. 3

    Click on "Delete Files" when asked "Are you sure you want to permanently delete these files?"

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