Before you do anything else, find your files and make sure you have them safe on your 2 or more backup systems.
Your story reads almost like you installed another OS but I can't tell.
As to Word, you can install LibreOffice (it's over at http://www.libreoffice.org/ ) and regain access to most Word documents fast.
Hopefully the real story is just a bum Word install but I can't tell.
I have a toshiba computer that has window 7. I also run a word starter with this which is just basic word processing. I made the mistake and hit a button when it asked me about upgrading and it ended put 64 bit on my hard drive and now I can't get in the word program, view any of my pictures, play music or look at videos sent to me. I can't even open up and look at my pictures and it definitely is not allowing me to do any printing. I have no idea how to get rid of this to be able to do these things again. I tried to restore when this first happened, but the 64 bit seems to keep overriding.
Please help, I need to do a lot of work and printing, but I can't.