Ghost v15 locks up laptop at end of back up process

I have used Ghost v15 on a Win XP SP3 laptop for quite some time now without issue.  This morning, I was doing a full back up of the c: drive to a USB external hard drive.  During the back up, I plugged in my printer via another USB slot and it locked up the machine and I had to do a hard re-boot (power button.)  Since then, I try to start a back up and it gets all the way through the back up until "1 second" is left and 95% complete and it locks up the laptop again and I have to hard re-boot.  I tried using the installation disk to uninstall and then reinstall Ghost but that did not fix the problem.

 

Any help would be greatly appreicated.