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This wikiHow teaches you how to clear your Windows 7 computer's various caches of information and temporary files.

Method 1
Method 1 of 4:

Disk Cache

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  1. Click the multicolored Windows logo in the bottom-left corner of the screen.
  2. Doing so will search your computer for the Disk Cleanup program.
    • If your mouse cursor doesn't appear in the text box at the bottom of Start when you open it, click the text box before typing.
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  3. This program's icon, which resembles a flash drive with a brush on it, should be at the top of the Start menu. The Disk Cleanup program will open.
    • You may have to click the Disk Cleanup icon once it appears at the bottom of the screen to open the Disk Cleanup window.
  4. Click the checkbox to the left of each item in the Disk Cleanup window, scrolling down once you reach the bottom of the window to view more options if necessary.
  5. It's at the bottom of the window.
  6. Disk Cleanup will begin deleting temporary files from places like the "Thumbnails" cache and the Recycle Bin cache.
    • Once this process is complete, Disk Cleanup will close.
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Method 2
Method 2 of 4:

App Data

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  1. Click the multicolored Windows logo in the bottom-left corner of the screen.
  2. It's a tab on the right side of the Start window. This will open the My Computer window.
    • If you don't see the My Computer tab here, type my computer into Start, then click My Computer at the top of the Start window.
  3. To do so from the My Computer window:
    • Click the Organize tab in the upper-left corner of the window.
    • Click Folder and search options in the resulting drop-down menu.
    • Click the View tab.
    • Check the "Show hidden files, folders, and drives" box under the "Hidden files and folders" section of the "Files and folders" section.
    • Click OK at the bottom of the window.
  4. Below the "Hard Disk Drives" heading, double-click the Local Disk option.
    • The hard drive's letter is usually "C", stylized as (C:) .
  5. You'll find it near the top of the window.
  6. This will usually be a folder with the first few letters of your name or Microsoft account address.
  7. It's in the middle of the window, though you may have to scroll down to find it if the window isn't in full-screen mode.
  8. You'll find this option near the top of the window.
  9. Click once this folder to select it.
  10. To do so:
    • Click the Organize tab.
    • Click Properties
    • Uncheck the "Read-only" box.
    • Click Apply
    • Click OK when prompted.
    • Click OK
  11. It should open.
  12. Click one item in the folder, then press Ctrl + A . Alternatively, you can click Organize and then click Select all .
  13. Press the Del key on your keyboard.
    • A few of the files in the Temp folder may be in use, or system files, meaning that you can't delete them. If prompted, check the "Do this for all current items" box and click Skip .
  14. . Doing so will completely remove the deleted files from your computer.
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Method 3
Method 3 of 4:

Internet Explorer Cache

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  1. Click the multicolored Windows logo in the bottom-left corner of the screen.
  2. This will search your computer for the Internet Options program.
    • If your mouse cursor doesn't appear in the text box at the bottom of Start when you open it, click the text box before typing.
  3. It should be at the top of the Start menu. The Internet Options window will open.
  4. This is at the top of the window.
  5. It's in the lower-right side of the "Browsing history" section.
  6. You'll find it near the bottom-right side of the window. A new window containing all of your Internet Explorer cached files will open.
  7. Click one item in the folder, then press Ctrl + A . Alternatively, you can click Organize and then click Select all .
  8. Press the Del key on your keyboard.
  9. . Doing so will completely remove the deleted files from your computer.
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Method 4
Method 4 of 4:

DNS Cache

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  1. Click the multicolored Windows logo in the bottom-left corner of the screen.
    • Clearing the DNS cache solves problems with Internet connectivity, such as sites timing out.
  2. This will search your computer for the Command Prompt program.
    • If your mouse cursor doesn't appear in the text box at the bottom of Start when you open it, click the text box before typing.
  3. It should be at the top of the Start menu. A drop-down menu will appear.
    • If your mouse doesn't have a right-click button, click the right side of the mouse, or use two fingers to click the mouse.
    • If your computer uses a trackpad instead of a mouse, use two fingers to tap the trackpad or press the bottom-right side of the trackpad.
  4. It's an option in the drop-down menu. This will open Command Prompt with Administrator privileges.
    • You can't do this if you aren't using an Administrator account on your computer.
    • You may need to click Yes when prompted before you can continue.
  5. Type in ipconfig /flushdns and press Enter .
  6. You'll see a command saying "Successfully flushed the DNS Resolver Cache" appear if the flush is successful.
    • You may need to restart your computer before you'll notice the changes to your Internet connection.
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Common Questions: Clearing Your PC's Cache

Is it OK to clear my computer cache?

Yes, it's OK to clear your computer's cache. Wait to clear the cache after you've restarted your computer—that way, you don't delete any files necessary for the reboot by mistake. The Disk Cleanup feature can help prevent this from happening, since it targets files that your computer hasn't recently changed. [2]

How often should I clear my cache?

Clear your cache frequently, or when your computer doesn't seem to be running at max speed. When webpages struggle to load properly, the cache is sometimes to blame—clearing your cache can help nip this issue in the bud. [3]

Will clearing the cache speed up my computer?

Yes, it can, especially when it comes to your internet browsing. Clearing your cache can help webpages load more efficiently on your PC. [4]

How do you clear cookies on Windows 7?

On Internet Explorer, visit the "Tools" menu, followed by "Internet Options" and "Delete." On Firefox, head to "Tools," followed by "Privacy" and "Delete individual cookies." On Opera, click on "Tools," followed by "Delete private data." In all the menus that follow, choose to delete your cookies. [5]

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Warnings

  • Some "temporary" program files cannot be deleted since they're used by the Windows operating system. These files typically only take up a few kilobytes of memory.
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