Computer does not see my camcorder

Okay, I’ve been working on this for 2 weeks now and I can’t get my computer to see my camcorder. It was working and then it just stopped the next day. These are the things I’ve tried.

  1. New firewire cable
  2. uninstalling firewire drivers and letting Vista rebuild
  3. turning off firewall

And I don’t think it’s the camera that’s a problem because it knows when i plug the cable in since on the lcd it says DVin. And the computer does kinda flicker like it knows something was plugged into it, but nothing is there. Please help.

Camera is a Sony DCR-HC26