|Did it ever work on wifi?|
The specs for this model seem to include a built in wifi adapter; but the user manual "seems" to imply not?
Is there an board wifi adapter; or do you have a plugin card to the same end?
Device manager will tell you if there is a wifi adapter (of any kind) present.
I tried plugging ethernet in but the cable is crappy and old
But does it work with on ethernet/cat-5 cable or not; and have you tested with another (better/new) cable?
This is a link to a download (.pdf format) of the manual;page 21 is where id discusses wifi etc...