Every time I try to run MS Word,Excel, PP, OneNote (2007), it crashes. I get:
microsoft office has stopped working..
Safe mode also doesn't run. I have windows server 2008 (32bits) and MS products used to work some time before. How to fix it?
Have you attempted a Repair from Add Remove programs? That often resolves issues like corrupt files. Open Add/Remove and click on MS Office 2007 and then select Change and then Repair
You could record file and Registry accesses during the start of e.g. Word using Process Monitor. Maybe that will give you a hint what goes wrong.
However, as the problem seems to occur with all Office applications, I would definitely try to repair the installation as suggested by DaveM.