Playermodel doesn't show & Bullets do no damage.

For some reason my player model doesn’t show up no matter what I do. I don’t know if it has anything to do with the game settings (It’s all high). It’s been happening for a little while now. Any help on this would be much obliged.

Another problem is that bullets do NO damage in single player. However, things like fire, explosions, melee and objects do damage. This has happened recently. Help would be nice.

Thank you for any help!