Yeah, loading my previous saves didn't work, I tried making a new character, but the game keeps on CTD after leaving Red Rocket outside from Sanctuary.

I tried verifying integrity of game files, but that didn't work.

1) Are you using any mods?
2) What are your computer specifications?

CPU model
RAM
Video Card model

3) How much free space do you have on your Windows HDD as well as the HDD that the game is installed to?