Pine man - If I am saving for example, a word doc, system makes up its own mind where it will save to. I then have to go looking for it, and more often than not the Search Programs & Files doesn't find the file I have just written.
If I want to copy a file to another location, I can't because the "paste" opton is greyed out.
Dealing first with Word documents. If you select 'save' the file should be saved automatically to the location that has been set up in your Word Options. If you select 'save as' you should be given the choice of nominating the location for the file to be saved to. Is this happening?
Dealing with your second issue. When you want to 'paste' something you obviously have to 'copy' it first. Are you able to 'copy'?
Pineman - yes I can copy - as proved by my ability to copy to USB stick: it's the paste bit that I can't do. EG, if someone sends me a picture, or I copy part of a webpage, or download a file, I can copy them, but not paste. It's very strange, and I am by no means a learner (Well, I am when it comes to Win 7!) Have been using computers since Vic 20, Sinclair Speccy etc since I was a young thing!
I agree with Pine Man there are many threads online if you search the problem and in many cases mozzilla had recently been installed in some cases an upgrade to IE8 seemed to cause it ,other than to perform a full antivirus scan and possibly a restore to a time before the problem cropped up its hard to nail this one .ask yourself what (if any) software was updated or installed around that time and maybe it will point you in the right direction . , by the way I started with a tiny PC with windows ME ... so I think I deserve the most respect ,Ha Ha.
Try sfc /scannow. Start, in search box type CMD. In the above list right click CMD and select 'run as administrator'. Type sfc /scannow press enter. Follow prompts if any. Once completed reboot. Remember the space 'tween 'c' and '/'.