Sorry for the late reply. Day job :)
You never answered the questions on my first answer.
Can you still open MS Powerpoint?
The main program file for Word should be in either of these:
Windows 7 32bit: C:\Program Files\Microsoft Office\Office14
Windows 7 64bit: C:\Program Files(x86)\Microsoft Office\Office14
The filename is XXXXX XXXXX normal office 2010.
You can also type word.exe into the searchbox at top right corner of your file explorer window while you have 'Local Drive C:' opened.
Another way using Windows 7 is to click the windows logo, then type in word.exe in the 'Search programs and files' box at the bottom of the start menu. This may not find the file.
Another easy way to see if it is there, is to create another user on the system, then login with the new account, and see if Word works on there. This might just be a problem on your user profile.
If you really can not find the executable file for it, then repairing using 'Programs and features' in 'Control Panel' should fix it, but it looks like your already tried that.
Alternatively uninstall it, then re-install Office 2010.
Let me know if you find anything.
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