This has been a little issue for a while now for me. I'll try to enter a certain area and the game will crash within the loading screen, telling me "ESO has quit unexpectedly", with the Fatal Error 3. The first locations I noticed were small inconveniences, a story-important cave in Murkmire, the Traitor's Vault on Artaeum, the Wayrest Sewers I Dungeon, but recently I discovered that it was occurring with entire zones, namely Auridon and my recently acquired Northern Elsweyr.
I have confirmed that my PC meets the minimum requirements, I've tried reinstalling the launcher as is suggested with many similar issues, turning my graphics quality way down doesn't help and whenever I try to repair the game through the launcher it will always just stop at 24% (44360.04MB Remaining), even having left it overnight and closing every other program on my PC.
If anyone else has encountered this issue, or knows how to fix it, I would greatly appreciate any help you can provide. I can still play the rest of the game and am loving it, but it'd be really great to be able to finally finish the Murkmire main story, and adventure around Elsweyr.