thanks for the welcome.
Byu "refused to restart" I mean that after i used CCleaner I went to Start\Shutdown\Restart and the computer gave me a message that Windows was unable to restart. It then tried to fix the problem itself (I didn't know that Windows had this "fix"in its code!). the fix didn't work so I restored the computer to where it was prior to installing and running CCleaner. Now my computer works agian. However, I am skittish on doing any more CCleaner operations until i know why this happened.
As i said, i never had this problem with CCleaner runing on Windows XP.
Jasoom