This lesson in idiocy is a simple one.
First decide there is too much 'stuff' on the PC, and then remove it.
Use all the usual tools, 'Ad-Aware,' 'AVG' and the like, then progress to a little function called 'Find Junk Files.' A useful tool for removing dead links and,would you believe, junk files.
Simply run these programmes and delete.
The important thing of course, especially with the 'Find Junk Files' operation, is to fail to check just what exactly is being deleted! It is clearly displayed in front of you, and a check is recommended, but of course you need not bother because, 'They are all junk surely?' is the grand attitude!
At least that as my attitude.
Now the CD Rom will not play, the 'My Documents' and 'My Pictures,' files will open but fail to display, and I await with trepidation whatever else will malfunction during the course of the day.