I have a Dell desktop Inspiron that is one year old.
First off and most importantly as the desktop is only one year old is it still covered by a warranty?
There are many different models of the Inspiron, see http://search.dell.c...inspiron-580-mt
can you tell us which particular model yours is please.
As some of the USB ports function it suggests this is hardware and not software related, have you tried various components in the USB port that does not function at all.