When I boot up the game and when my save game is loading my game randomly crashes, but if I go into multiplayer from the start menu, it doesn't crash. I have read many thing on Google but none are helpful.

 

Thanks

Did you happen to save while on duty? If so, that's probably why.

 

Also, have you tried creating a new save? 

No I have not saved while on duty, and how would I make a new save?

The save files are located in 2 different places.

X:Users%username%AppDataLocalRockstar GamesGTA IVsavegames 
X:Users%username%DocumentsRockstar GamesGTA IVsavegames 

Note: The AppData-folder is usually hidden, make sure that you can see hidden files.
Note 2: “X” is the drive where you have installed GTA IV, and %username% is replaced by your username
 
Try and delete/move them from there and start the game again.

Edited January 29, 201412 yr by ineseri

It worked, thank you!

I am very glad to hear that! Happy gaming now :)