If you have a dual-boot or multiple-boot system, use the arrow keys to select the installation that you want to access, and then press ENTER.
In part two, you copy the registry files from their backed up location by using System Restore.
If you have a dual-boot or multiple-boot computer, select the installation that you want to access from the Recovery Console.
When you are prompted to do so, type the Administrator password.
If you use the NTFS file system, also print the instructions from Knowledge Base article KB309531. Click Start, click Shut Down (or click Turn Off Computer), click Restart, and then click OK (or click Restart). On a computer that is configured to start to multiple operating systems, you can press F8 when you see the Startup menu.
Use the arrow keys to select the appropriate Safe mode option, and then press ENTER.
Hit OK to exit the Registry Editor and then reboot your computer. Figured I would give this even though my gut told me it was too simple to actually work. FYI, the issue also started after applying SP3 for XP. the problem happened after I installed the windows service package 2 (i know, im a little behind).after reading other forums, I tried the F8 method but couldnt seem to make it work.When the computer restarts, press F8 and select safe mode.It will switch to a black screen with script-like running. Go to "C:\WINDOWS\systems32\drivers\sptd Rename sptd file to sp...or anything you will remember Restart your Comp When the computer restarts, press F8 and select safe mode.It will then bring a dialog box about running it on safe mode. It, seems the Windows registry controls this restart looping process.What I did was booted in the Recovery Console using a Win XP Home CD (a home CD will let you fix Home or Pro apparently.) I used the following process to get the computer to a workable state: To complete part one, follow these steps: Insert the Windows XP startup disk into the floppy disk drive, or insert the Windows XP CD-ROM into the CD-ROM drive, and then restart the computer.Uninstalled SP3 and the issue went away (obvioussly did that from safe mode), reinstalled SP3, problem came back. I am unsure if this will ever be read but I wanted to thank you for the tip regarding the registry entry.I consider myself pretty apt at what I do however, there are two machines in my care and control that have had this issue where the BSOD and looping restarts occur immediately after SP2 was applied.last known configuration and safe mode dont seem to work but I may have not done them correctly; im no computer whiz. I took my computer out in the driveway and booted it into oncoming traffic.but after pressing the "disable automatic restart on system failure" option, I got this error message on the "blue screen of death" (this happened after the light blue xp loading screen instead of it restarting like it usually does): STOP: c000021a Unknown Hard Error Unknown Hard Error what should I do? I then went down the the store and bought a new computer.