OK,
Now I am worried. I had the computer powered off overnight. This morning the first thing I did was to boot up and run the Windows memory test. It ran all six passes without a hitch. Then I realized I had not yet turned on the AC power to the charger. Thinking this could be voltage related, I turned on the AC to the charger while the test was running. I left it run until the battery light stopped flashing (fuly charged) and the memory test was still running without any errors. At that point I ended the test.
Interestingly, Windows XP then came up with the Irregular Start dialog window. I tried power off / power on and it came up again. I had to press "Enter" in order to "Start Windows Normally".
I am in over my head!
Any ideas?
Neil