There are some programs  you  will open  from Run command like msconfig,gpedit and regedit  .If you want to delete this run Command history take look how to do it.

1.Right click on Windows Task bar and select Properties ,then Task bar and Start Menu Properties Window appears in that select start Menu and select classic Start menu.

                runclear

2.In classic Start menu windows  click Customize  and then Customize Classic Start Menu appears and there is recycle bin Icon indicating to you to remove records of recently used Documents,Programs ,Web sites click clear and  click clear.