Program installation repair attempts failing immediately

[g-unit1111]

I am having problems on Windows 7 Pro where I will attempt to reinstall / repair or even uninstall a program like MS Office in an attempt to repair the installation but the install programs will fail on me almost instantly. Do I need to completely remove and reinstall these programs?

 

[Brett928S2]

Hi

Run a hard drive test first in DOS....HIRENS ETC...

All the best Brett

 

[g-unit1111]

OK, how do I do that? I'm not entirely sure how to use command diagnostic prompts like that. I'm running 7 Pro if that helps.