99.999% the camera is dead.. it’s what they do best… and see this thread for Sony Shared Libary to get fn functions working. Can’t remember the details but have done this once, will try to find the walk through and post back.
http://www.siliconpopculture.com/forum/viewthread/7063/
if you can find a set of correct restore discs it saves a lot of faffing about, must be for your specific model though, I have TR5MP but they won’t work on yours