sidney1st

You have first to examine the msi*.log files in the temp folder.
msi* means that the files start with msi and * is i think a random sequence.
The log file will tell you why the update failed, often it comes from an access problem with a reg key.
If it is the case, open regedit and take ownership of the reg tree of the key found in the log file (right click/permissions) a dialog box similar to the security tab of a file will open.
Then take ownership of the reg tree and allow to system the control of the reg tree.