My GTA IV doesn't work at all and I haven't gotten much help. When I run the game, I can get to the menu and then when I click the start button it will load for a while then crash. The error message says something bad has happened and the only error info I can find is this:

Description
Critical runtime problem

Problem signature
Problem Event Name:	APPLICATION CRASH
System RAM:	-1
Available RAM:	-2132647936
Number of CPUs:	4
Video Card Manufacturer:	ATI Technologies Inc.
Video Card Description:	AMD Radeon(TM) HD 6520G
Video Card Driver Version:	8.17.0010.1071
OS Version:	6.1.7601.2.1.0.768.3
Locale ID:	1033

If you need me to attach a file, ask. The error occured when I attempted to install a vehicle and I THINK I removed it, I have deleted and redownloaded it many times. And still hasen't fixed it (I have the steam version). I think the issue is coming from a vehicle file/folder of some time. If anything new happens with this I will post about it

Have you bougth the game? 

Have you bought the game?

I think he said: "I have the steam version" Or something similar

Oh that he did. My mistake. 

Do you have the latest redists?