Default Please help. Phone wont connect to Computer. Ive tried everything

Hi Guys

I hope someone can help me I have a very strange problem. My galaxy note 2 is not detected by my computer at all (Not a driver issue, not seen at all) It charges fine.

Things I've tried so far are 3 different cables,

Two different Computers,

Reset phone to stock out of box state.

And the one that gets me the most is I even changed the whole USB board assembly. (I was sure it had to be a broken USB port

Still no joy.

The problem now is if I can't connect it to my computer I can't reroot through Odin.

Any Ideas?

Also is it possible to root phone again from stock without connecting USB to PC.

Thanks in advance.