Uninstalled Zone alarm zlsSetup_70_473_000_en.exe running on XP SP3 to upgrade to zlsSetup_70_483_000_en.exe.

After uninstallation, the machine will not finish rebooting. It shuts down, and then sits there, never actually restarting. The screen eventually goes into sleep mode.

Reinstalling does not fix the problem. Machine was running properly before uninstall.

Haven't been able to find any solution for this issue, but have seen other postings with it.

What can I do to fix this, besides complete reinstallation of the OS?

Operating System:Windows XP Pro
Software Version:7.0
Product Name:ZoneAlarm (Free)