Marcus, to alleviate your concerns that the problem is power-related:
1. Try plugging the computer directly into the wall, or into a different power strip to see if the behavior changes.
2. Switch out the power supply with a known, good one and see if the behavior changes.
However, I don?t think it likely that power is your problem. Power problems would be much more likely to manifest themselves as unexpected reboots or shutdowns.
What are the specs for this particular computer (especially RAM)? The minimum RAM configuration for the GX110 is 64MB. If this is all that is installed on this particular computer, and this user regularly has multiple programs open, chances are about 99% that this is your problem. A Win2K/Office2K combination requires a MINIMUM of 64MB for the Operating System + an additional 4 MB for each Office application running simultaneously (8MB each for Outlook, Access or FrontPage; 16MB if she is running PhotoDraw). If she is running other non-Microsoft software (especially graphics-related), that also must be taken in to account.
Other places to look:
Check the Event Viewer (specifically the Application Log) to see if any error messages are being generated. While you are there, also check the other logs for error messages that may give you a clue as to what this computer is doing.
Check the Device Manager, to ensure all devices are operating properly.
Check the Power Management settings to ensure that critical devices (like disk drives) are not going into hibernation unexpectedly.
Hope this helps.