Can not connect it to zune. Possible hardware problem ?

[kordellas]

I have a Lumia 800, tried to connect on PC but failed.
Tried it in a new formatted PC, again with no luck.

I have tried all the fixes provided by Microsoft for Zune, again the phone is not recognized, nothing either as an uknown device.
I have to say that I reset the phone to test it again.

I guess that is a hardware problem on the phone.
Are there any things I can do for this? I would love to update it to 7.8

Thank you

 

[kordellas]

come on. noone ?