I'm on windows 7 pro I was installing office 2010 beta when my computer crashed, so I had to hit the reset button after this I am unable to install any kind of office (I tried 2007 also), I also tried to stop the office file services manually and try to install but no luck. Anybody knows what can I do ?
Do you have Windows System Restore enabled? That's my first step.
Microsoft has a tool to remove Office completely. I don't know if it works on newer versions though, and I wouldn't know where to start looking.
Failing that, nuke the Office sections in the Registry, but make sure you back up before you try that.