I just came accross the following and after my NO Boot yesterday morning and a visit to my local ( with in 40 miles ) repair shop got prepaired for next time.
Lincoln Spector
From the November 2003 issue of PC World magazine
Windows XP won’t load on my computer. What should I do?
If Windows XP (or 2000) refuses to start, press F8 right after you turn on your PC but before the Windows log-on appears (it may take a few attempts to get the timing right). At the resulting menu, select Last Known Good Configuration to restore your Registry to an earlier date.
If this doesn’t get your PC working, reboot and press F8 again, but this time select Safe Mode, and then choose Start, All Programs, Accessories, System Tools, System Restore. Follow the wizard’s instructions and pick an appropriate backup.
If that approach doesn’t work either, or if you can’t even get to this menu, use your emergency boot floppy. If your hard drive’s boot sector or Windows’ basic boot files have been corrupted, this disk will circumvent the problem and boot you into Windows. If you don’t have an emergency boot floppy, you may be able to use one created on another PC running Windows XP or Windows 2000, but there’s no guarantee that it will boot your machine.
To make one, insert a blank floppy disk into drive A:, select Start, All Programs, Accessories, Command Prompt, type format a:, and press Enter. When asked if you want to format another disk, type n and press Enter. Type the following commands, pressing Enter after each one.
xcopy c:\boot.ini a: /h
xcopy c:\ntdetect.com a: /h
xcopy c:\ntldr a: /h
Now type exit and press Enter to close the window. Remove the floppy disk and label it “Windows XP boot floppy.” Put this emergency disk in the floppy drive of your inoperable machine and boot up. Windows should run with no problems. You could simply keep the floppy in the drive all the time, but to truly fix the problem, launch the command prompt as described above, type xcopy a:. c:\ /h, and press Enter.
Hopefully, you’ll have a disk ready should you need it. I didn’t. Very expensive lesson not to be repeated.