I tried to do Yngol Barrow but as soon as I entered it changed to a mottled fuzzy blue as if seen without corrective glasses. I have exited and reloaded several times. I have exited the game and restarted my computer several times. Is there a console command to clear this up or will I have to not do the related quests.
That actually happened to me back in the day on PS3. My advice for you would be to try the Yngol exit (Not the entrance). You'll need to spend a couple of minutes finding it. Once you find it, enter Yngol's Barrow that way and just use command 'TCL' to phase through any blocked barriers.
It's happened to me as well. If the bug persists, the way I fixed it was simply staying as far away from the dungeon as I could for a while. Eventually, it fixed itself, though that's probably not guaranteed.