Ash is right, check also to see if you have the gta4Browser
.exe and LaunchGTAIV
.exe in the DEP (Data Execution Prevention)
settings. Sometimes having them in it helps a lot.
Click the start
right click on "Computer/My Computer
" select "Properties
". Go to "Advanced
" and under "Performance
" click "Settings
". Click "Data Execution Prevention
" and select "Turn on DEP for all programs and services except those I select
:". Click "Add
" and add the following EXE's:
Reboot your system and try launching the game again.