Need info or solution

My external HD is turning on.  It’s conected to my pc by firewire.  But I can not get my pc to reconize it.  If I go to device manager it says the device is working fine then gives me a error code 43.  Does anyone know how to get by book working?

It has been working for the last 2 years with out any problems.

It is my back up for my pc.  I have over 5 years of info and pictures on it.


What happens when you connect it via USB? Have you tried to connect it to a different computer?