Microsoft Word opens then corrupts files?

Recently I had installed cccleaner, zonealarm, and avg protection on my laptop.during this, I had un-installed some programs which came with the computer that I didn't need.
Now everytime I try to open my word documents, the files end up corrupted and unable to open. I'm not sure what to do and have run all the scans.
The laptop is a lenovo and runs windows 8.1.

Some programs might rely on microsoft word that you uninstalled that came with the laptop since unknown what you uninstalled best to reinstall the programs that came with the laptop might have to do a system recovery back to factory settings