Press the Windows Logo key and press R to open a run command box.
The Windows registry stores a wide spectrum of information about applications, operating system settings and activities that you've performed on the computer. The registry stores each set of information in an entry called a registry key. Your registry's "WordWheelQuery" keys retain information on all file searches that you've performed in your computer; Windows accesses these keys when it displays search history or tries to auto-complete a search task. You can reset your computer's file search history by deleting the appropriate WordWheelQuery key.
Type "regedit" in the run command box; press "Enter" to open the Windows Registry Editor.
Navigate to the entry for the following key in the Registry browser on the left side of the program window:
Right-click the entry for "MRUListEx" in the keys list on the right side of the program window.
Click "Delete" in the menu, then click "Yes" to delete your search history.
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