Don't know what happened. One day, got a prolonged black screen but then booted up, next day got the message on a black screen that NTLDR was missing, and went into a reboot loop.
Acronis backup image didn't work. Don't know why. Gave up after a few tries.
It was time for a reinstall anyway. WXP Home had slowed down a lot. I reinstalled WXP Pro and didn't like it. Many 3rd party apps didn't work, and many that did were sloooow. Video screen was slow and jerky. Maybe driver and file path issues? Decided it would be quicker to just reinstall WXP Home from the disks (all 13 of'em) ugh. But thank goodness for the backup disks.
Both those wxp installations reformatted the HD. After the first one, I deleted the HP Recovery Partition, but the second install (oem, 13 disks, ya gotta sit and watch'em ) put it back.
Now The Quirk: When I reinstalled the old free version of Powershadow, v. 2.82, the one that required an internet connection to register, it showed up after restart as the registered version!
This phenomenon (PS ver. 2.82 still registered after reformat) was mentioned over at Wilders, and DennisD referred to it here, but I was never sure that anyone had actually done a reformat as opposed to a repair job. Well, by golly, I did, twice. But something on the hard drive survived to show Powershadow that it is still registered. See the picture, taken after all that reinstalling.
Shadowtip still tries to phone home, and Outpost blocks it . See the picture.
Learned a couple of things:
1. Glad I had taken the time to make the backup disks. Most Important.
2. When this PC is finally reconfigured, I'll make a full backup image and make sure it works before I need it.
3. Reformatting apparently doesn't change everything. Wonder what else it missed?