None of those issue sound like a hardware issue but common OS damage. And it's sad since repair of this OS is usually not possible since we have only the restore media.

Try the Cnet Computer Help for ideas about about what to try next.

Your story gets worse as we can't relaod Windows and you appear to have dismissed ordering the restore media and you don't have any OS CD/DVDs to work with. Just like a flat tire and no spare, I don't see how you'll get out of this bind.
Bob