Help USB device not recognised

[Vzaar]

Android Version: HTC desire
Network:Talk talk
Taskiller Used?: not sure
[Optional]Are You rooted & which Rom: not sure
Issue: recently my USB has not been recognised with my phone i have tried a brand new wire and 2 computers so it must be the phone ideas?
i have also tried a factory reset

 

[overblood]

Install an app called "Catlog" from the PLay Store. Run it then plug the USB in and see what the log says...