Beware buying refurb video cards from Newegg. It's a real crapshoot. Very few ever work properly.
Even if you return it for a refund, you're out shipping, and they might even try to charge you a restock fee.
I sometimes wonder if they bother even looking at the cards for visible damage before shipping them...
There's a reason why they warn you a hundred times that they are not responsible for refurb stuff, don't test it, and make no guarantees past a week... because they're selling half-broken junk and calling it refurb, hoping you won't notice.