Here are the save game locations of GTA 4 Game for Windows PC. For All version of GTA 4 ( like for old version, for new version), Save game location is given here, check below.
Below are the 3 the Save game Location of the PC GTA 4 Game. Check all these 3 locations one by one and check it where your save game are saved.
If you want to Download & Put 100% save game file or mission wise save game file to the save game location – click here.
For Latest GTA 4 – C:\Users\Your Name\AppData\Roaming\Goldberg SocialClub Emu Saves\GTA IV\0F74F4C4
Original GTA 4 Location ( Older Version ) – C:\Users\Yourusername\Documents\Rockstar Games\GTAIV\
Original GTA 4 Location ( Older Version ) – C:\Users\USERNAME\Documents\Rockstar Games\GTA IV\Profiles\