Thanks Philip. I'm running Windows Vista Home Premium.  Please pardon my ignorance :) After 3 tries, Windows seems to have calmed down!  It didn't ask me for the product key and is giving me full access to everything. Thanks for your guide. Regards Dave
My Dell Inspiron 1525 shut down unprompted today and when I booted it up again Windows Vista 32-bit OS said I had a non genuine version and asked me for my product key.  I entered that and it rejected it. Is there any solution to this?  I have the original Dell Installation Disk with Vista and the Product Code. Regards  Dave
Help! Windows Vista 32-bit suddenly thinks that my installation is not genuine!