Unable to delete temporary Internet Explorer files.

- Delete unwanted junk files by using command prompt.
click on START -> RUN -> CMD ->OK
xp - Cd local* or vista - cd app*
cd temp
del *.* /s/q/f
cd c:\windows\temp
del *.* /s/q/f
cd..
cd prefetch
del *.* /s/q/f

- Reset Internet Explorer 7 or 8
click on START -> RUN -> inetcpl.cpl -> OK
On Internet properties windows -> click the 'Advanced' tab.
Under 'Reset Internet Explorer Settings', click 'Reset'.
On 'Advanced' tab you will get the below option
checked mark and apply the settings "Empty Temporary Files folder when browser is closed".

Tips for solving problems with Internet Explorer