Windows has got the habit of saving almost anything you got your hands on, like recent run list, , recent files etc.. Although some of these may be useful most of them are not. The recent RUN list, mentioned above, is saved in the . (The recent Run list is useful but this is an example). If you take Start»RUN and type something you may perhaps note a drop down of the previous commands typed there.

These commands that were previously typed are saved in the Registry. Goto Registry Editor by typing regedit in RUN dialog. Navigate to the following folder HKEY_CURRENT_USER\Software\Microsoft\Windows\
CurrentVersion\Explorer\RunMRU

Here you will find some regWords with values of Run lists and name as a,b,c,d.. there will also be an MRU List which saves the order in which the Run list is to be shown. Delete all the keys except default . Now restart Windows Explorer (press ALT+CTRL+SHIFT and click CANCEL button on Shutdown dialog and start explorer again through Task Manager). Now take the RUN box and the recent commands will not appear any more.

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