When i open my virus scanner(it opens and runs) and try to open my SecurtiyCenter(it doesn't open and doesnt run) the message appears:

"Some components of McAfee SecurityCenter are either missing or may not have been installed properly.

 

Please reinstall McAfee SecurityCenter."

 

The only problem is i cant figure out how to reinstall it withn buying it again since i already had it on my computer when we bought it and we had are computer for about 2-3 years.So if anyone knows how to reinstall it  for free i could use the help, thanks!