I used to have Windows 7 32-bit and was able to connect my HDR-HC7 Sony camcorder via Firewire without too much trouble. Preimere Elements 11 woud see the camera as would HDVSplit.
I recently built a new computer (using the same Firewire card) and placed Windows 7 64-bit on it. When I connect the camcorder via Firewire, it is recognized instantly as the HDR-HC7 camera. I can see it under Devices and Printers. The camera itself shows that the iLink is on, but when using Preimere or even HDVSplit, there is no camcorder recognized. It is as if I didn't connect it at all, even though Windows does see it.
I have tried changing the settings on the camera to DV Convert, Auto, etc. but I cannot seem to get it to be recognized. Also the drivers appear to be up to date (if you consider 2006 up to date).
Any ideas on how to solve this would be greatly appreciated.
Thank you for the help.
One thing that might help is to go to the System>Hardware>Device Manager in Win7, and look for the IEEE-1394 driver. Try the "Legacy" FW driver, and test. This helped many, where cameras were not being recognized by many applications.
Good luck, and hope that it is just a driver issue.
Driver issues with newer OS's can be tough.
I have seen several issues with the Win8 drivers (same thing happened with Win7 drivers), and hope that SP-1 will fix most of those.
If things are now working properly, maybe take a look at this article: http://forums.adobe.com/thread/1058744?tstart=0
Good luck, and happy editing,