Windows Installer Fails to start

After a windows update the installer service stopped functioning.

I get an error message:
Could not start the Windows Installer service on the Local Computer
Error 1053: The service did not respond to the start or control request in a
timely manner.

I have tried reinstalling and it seems to work for awhile and then stops
again.

I have run many different virus scans and chkdsk and done the suggestions on
technet:

Unregister Windows Installer, and then reregister Windows Installer. To do
this, follow these steps:
      
1. On the "Start" menu, click "Run:.
                              
2. In the "Open" box, type "msiexec /unreg", and then press ENTER.
                              
3. On the "Start" menu, click "Run".
                              
4. In the "Open" box, type "msiexec /regserver", and then press ENTER.

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Any help would be appreciated.

Steve

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It can't be too easy to use.