If you have butter fingers like me, and over time end up with a lot of old commands with typos in your Windows run box that get annoying - deleting them is a simple. All you need to do it remove the following registry key.

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HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\RunMRU

Now every time one plays with regedit, it can be dangerous - you can also save this commend as a .cmd file, and then run it with admin privileges - essentially does the same thing.

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reg delete "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\RunMRU" /f

You can also download the same thing from here .