Thanks again Peter. Digging thru Microsoft support page, I came up with the solution to solve the problem. My system doesn't shutdown anymore. It seems I got the Blaster Worm virus. How , when and where I got the virus, I have no idea. In case someone comes over the same problem just click the Microsoft link: http://www.microsoft.com/security/incident/blast.asp and follow instructions as shown... I wonder why I was not able to get rid of the virus after reformatting and reinstalling XP. I used Western Digital Data Lifeguard program to reformat the HDD. Cheers!!! Peter Shkabara <[log in to unmask]> wrote: Ok, here is an idea. Have you checked the system logs for what is happening? I often forget to look at the log files - they sometimes contain useful information. See if there is some program activity that precedes the failure. Since you have re-installed a clean version of XP, then it is more likely that some piece of hardware has a device driver problem during shutdown. If this is not too intermittent (happens more often than not) you might try turning off various services before you shutdown (using the administrative tools). This may point you to the program or service that is involved in the failure. Good luck. Peter ----------------------------------------------- The NoSpin Group [log in to unmask] > -----Original Message----- > I have re-installed and even reformatted the HDD with the > same error coming up.... Visit our website regularly for FAQs, articles, how-to's, tech tips and much more http://freepctech.com --------------------------------- Do you Yahoo!? Yahoo! Hotjobs: Enter the "Signing Bonus" Sweepstakes The NOSPIN Group is now offering Free PC Tech support at our newest website: http://freepctech.com