Hi All:
I had this same problem. My \windows\system32\drivers\etc directory was inadvertently deleted. That directory contained the imhosts.sam file which contains as I understand it the login accounts and passwords. Thus everytime I tried to login the computer would reboot!
I installed a copy of winxp pro to my winxp home machine, to a separtely named directory but on the same partition (I was unable to create a second partition bc I couldn't boot etc). Then when able to boot in pro, downloaded undelete software and restored the imhosts.sam file, rebooted to home and everything is OK.
Problem: I still have the Pro install loaded and I am worried about whatever problems that might create. Radio's solution works if it was partitioned, what if it wasn't?
Can the solution be as simple as deleting the pro directories and modifying the boot.ini file to delete the multiboot choice of pro?
Thanks for any thoughts,