If some viruses or something makes your windows XP boot looping
and cannot stop, so this steps maybe useful.
1. Use your windows XP boot CD
2. Boot from CD-Rom
3. Choose Repair from Windows Installation Screen
4. Choose partition which Windows Installed
5. Rename your boot.ini into other name
ren boot.ini boot.ori
6. If cannot please change attribute file of boot.ini
attrib -h c:\boot.ini
attrib -s c:\boot.ini
attrib -r c:\boot.ini
7. Rebuild boot.ini
bootcfg /rebuild
8. Check disk that may errors
chkdsk /r /p
9. Fix boot sector, answer yes or y for any questions
fixboot
10. Fix master boot record if necessary
fixmbr
11. Reboot
press ctrl+alt+del
Tq 4 ur comments, bro