Try one or both of the following:
1. Start in Safe mode
2. Log on to the computer as local administrator
3. Bring up a command prompt -> Start, Run, type cmd.exe and OK
4. At the command prompt, type msiexec /unregister and hit ENTER
5. At the command prompt, type msiexec /regserver and hit ENTER
6. At the command prompt, type exit and hit ENTER
Now, try your install. If this does not work, try,
1. Open a command prompt
2. At the command prompt, type sfc /purgecache, then hit ENTER
You may need to provide Windows installation source files. If not, you will receive the following message:
Windows File Protection successfully made the requested change.
3. At the command prompt, type sfc /scannow and hit ENTER
4. When finished, type exit at the command prompt and hit ENTER
