Hi,
The rtwatchdog.llb library is located typically in: LabVIEW 7.1\vi.lib\addons\rt folder. Have you searched this folder for the library? The RT watchdog library is also installed when you install real time. Have you tried installing LabVIEW RT on a different computer and verify if the library is there?
When you state that you installed LVRT 7.1 and the patch, did you first uninstall LVRT and then reinstall or did you do a repair on the installation since your hard drive crashed?
Looking forward to hearing from you,
Regards,
Nadim
Applications Engineering
National Instruments