My Canon ZR700 camcorder has suddenly started having problems with my Lenovo X61 tablet. Whenever I connect using the firewire port, it is not even getting recognised. The camcorder and the firewire cable are not the problem because it works well with other laptops. All I can think of is that either the firewire port is broken or the drivers have become corrupt. I would greatly appreciate if you could suggest some ways to debug this issue.