Look, lets start with basics...

1. Go download the Datasheet for your PIC...
2. Go see where the Crystal IS SUPPOSED TO BE CONNECTED

Come back and tell us which pins it has got to be nailed to, and then tell us why you insist on having it on RB6/7 in your schematic. This I've got to hear...

And whilst were teaching schematics, you never, ever, ever draw lines or connections through a component! Go around it.