permission to save

I have Windows 7, and it tells me I don't have permission to save documents in the "My Documents" folder.

So I created a "new my docs" folder instead (in the Documents library on the hard drive), which worked fine for many months, but it now tells me I don't have permission to save in that either.

In addition, some of my files have somehow become "read only" and I can't add to them / edit them.

I frequently get "Word has encountered a problem" messages.

I can now only save Word docs onto a memory stick, not the hard drive.

Can anyone explain this, or help?

Thanks,

Mick9999

Sorry to be dumb, but where is MS Office/word/ help/ fix and repair ? I can't find "help" in Word.

As far as I know, I have Office 2007, which Word is part of. I use the Word button on the tray at the bottom to open Word (well, usually I just leave Word open anyway as I use it every day). I've had lots of messages about something being "postponed for Normal", whatever that is, but it hasn't seemed to matter in the past. I can't make sense of this today.

Thanks for patient advice. I ran diagnostics, it whizzed thru most of the sections reporting no problems, then very very slowly started the last test. I left it running & went downstairs to do something else, & when I returned it had closed itself without leaving any messages, annoyingly. Don't know if it'll have found & fixed the problem automatically? I'll see if Word behaves better now - seems OK so far but this has always been just a sporadic problem.