Firewire port failure/ tried all remedies

Hey Guys,

The problem I'm having is in regards to connecting a G-Drive Mini to my Firewire 800 port. My main question is can my firewire port be "fried" and still provide my drive with power? The drive will connect Via USB successfully.

The solutions/remedies I've tried are:

• Reset Pram
• Reset SMC
• Reinstalled Combo Update for 10.6.8
• Booted off install disk and opened disk utility to see if drive would mount
• AHT Extended Test resulting in no problems found
• Used an external power supply to power G-drive when plugged into Firewire 800 port. (1 amp power supply)
• Drive was successfully mounted on a Mac pro using the same firewire cable.
• Formated/added files onto drive using USB
• Reset Firewire port by unplug power and shutdown for 15 minutes

Symptoms occuring are:

• Drive is getting power from Firewire port.
• Can connect via USB to the drive.
• Will not mount of be recognized in disk utility or firewire section in system profiler (only information under firewire tab is the Max speed limitation of 800mb/s)

My Macbook Pro:

• Macbook Pro 7,1 (Mid-2010)
• Intel Core Duo 2
• Running Snow Leopard 10.6.8
• 2.66ghz
• 8Gb-Ram

My External Hard-drive:

• G-Technology
• G-Drive Mini
• 1Tb

Any thoughts, suggestions, or questions are greatly.

P.s. I sadly don't have another firewire device to test on the port but this device is indeed working properly because I tested it on a Mac Pro with the same cable.

Is it possible for my port to be fried and AHT report no problems?

I'm considering updating mac to Mountain Lion or Mavericks to see if problem persists (Last Resort) Bootup off install disk should have disproved this theory?