Clearing your Internet search history from your computer's hard drive is a good way to cover your tracks and keep your browsing habits and personal and financial information private. The best method for accomplishing this is to manually delete the history from the registry of your computer, permanently removing it from your hard drive.
Click "Start," then click "Search." Select "All Files and Folders," and then type "regedit."
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Press "Enter" or double-click on the file named "regedit.exe" to open the registry.
Open the folders in the following order: "HKEY_CURRENT_USER," then "Software," then "Microsoft," then "Internet Explorer," and then "TypedURLs."
Right-click each entry and select "Delete."
Click the "x" button in the corner of the window to close the registry.
Repeat this procedure after each browsing session, as the history folder will continually be refilled as you continue surfing the web.