2004 Envoy won't turn over and guages don't work

We ran the battery dead on our 2004 Envoy. After trying to charge the battery the car still would not turn over. Some of the dash lights and service lights work but none of the guages work. The radio doesn't work but the tempature guages do work. There is not a click or anything when trying to start the car. I took the battery to the local auto parts store and they charges the battery completely. Cleaned the terminals and still the same thing has happened. I check every fuse and none look to be blown. Not sure how to check the relay fuses? I put the screw driver test on the starter and it turned over. Is there anything I can do or is this a computer issue. Thanks. Gary