I never fully recovered from the problems I described in http://www.experts-exchange.com/Operating_Systems/WinXP/Q_20925737.html
Suspecting the problem might be either my old motherboard, BIOS, or memory, I upgraded to a Asus P4C800E, P4 3GHz, and 1 GB of memory.
Now I am trying to rebuild the HAL so that I can boot.
I tried a "Repair" install but still could not get XP to boot.
I have been trying to avoid having to reformat my hard drive and to re-install ALL my programs.
I read extensively in the databases and read about an "UPGRADE" re-install but I don't seem to have that option.
Should I next try a "Clean" install and delete the Windows folder? That way the data on my hard drive will be in tact and will I have to re-install all 200 of my programs.