My first question is: What makes you think System Mechanic is the answer for whatever is wrong?
As for errors, I have a basic mentality on how to go about that.
a. Check Event Viewer, looking for errors (not warnings) that might have some relevance to the problem perceived.
What is the Event Viewer, and Should I Care - Ask Leo! - http://ask-leo.com/what_is_the_event_viewe...uld_i_care.html
b. See if I can duplicate the error...and write down all details of any error message that might appear on the screen.
c. Use Google to see if there is any useful data on what occurs. Shutdown problems are common to every Windows operating system I have ever used...and there is plenty of data available on the Web which describes the intelligent way to try to solve such. I don't think any of those ever mention System Mechanic
d. Not sure what the "disk error fixing thingy" refers to...but if it is a part of XP and it wouldn't work...you need to elaborate on what "wouldnt work" means.
If the shutdown situations are limited to only situations where I use MS Word, I would focus on that. My first instinct would be to uninstall/reinstall Word and/or update it, since there are probably updates for it or for the Office version being used.
What version of Word/Office is involved here?
Things to consider reading:
Troubleshoot XP Shutdown Problems (MS) - http://support.microsoft.com/?kbid=308029
Troubleshooting Windows XP Shutdown Issues - http://www.theeldergeek.com/shutdown_issues_in_xp.htm
Windows XP Shutdown Troubleshooter - http://aumha.org/win5/a/shtdwnxp.php http://www.google.com/search?hl=en&q=M...amp;btnG=Search