Hi
STOP 0x7B means INACCESSIBLE_BOOT_DEVICE.
- First you can restart the PC and press F8 to enter the Windows XP Advanced Options Menu. Once the menu appears select "Last Known Good Configuration". See if Windows XP starts correctly. If it does restart the PC again and make sure it goes in normally.
- The second thing you want to do is enter recovery console and run a check disk. Here is how to enter the recovery console with your Windows XP CD:
http://pcsupport.about.com/od/fixtheproblem/ss/rconsole.htm
Once in recovery console you want to type
chkdsk c: /r
then press enter. Allow ChkDsk to run and fix any errors. Restart the PC once done and see if it is now working.
- If it still doesn't work restart the PC again and enter Recovery Console. Once in Recovery Console type the following pressing enter after each line:
Fixboot
Fixmbr
Once done exit recovery console and restart the PC. See if it is now working.