"RUN" not working

  Adam Patrick 20:43 19 Aug 03
Locked

Hello
I'm having a problem with "RUN" on the START menu. When I type in a command (e.g. dxdiag) the following message comes up:
"Windows cannot find 'dxdiag' or another open program cannot find a system file. To search for a file click the start button and then click search". What does this mean?
Also when I try and access disc defragmenter using SEARCH, a message appears saying:
"Drive C locked by a disc utility" (but there is no disc in the CD ROM drive).
These problems have occured since trying to unsuccessfully install a software package called Pinnacle Studio 8, but that might be a coincidence. (Thanks for your help Plankton and Jim on that)
Any help on this would be appreciated.

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