while seaching the web I found this article:
"The PC version of Grand Theft Auto IV has to deal with some problems on its release. But Rockstar already is working on solutions and just provided PCGH with possible solutions for three bugs that have been identified.
Issue 1 - Fatal Error MMA10 on saving the game.
Possible Solution 1 - Sign out of the Rockstar Social Club, on starting the game skip the login . This allows the game to start. If you are connected to the internet, you will be prompted to login to Game For Windows Live (GFWL). If you login to this the game will save without issues.
However if you are not connected to the internet, GFWL has an offline mode. If you try to save at your safe house, it will advise you to login. From here choose YES and the game will appear to freeze for a second, hold down the Alt and press Tab to go back to your desktop. You will see the option to sign into GFWL Offline mode, do this and then ALT + Tab back into the game. This should allow you to save, although it may take you to the beginning of the game.
Possible Solution 2 - Install
.net Framework 3.5, also unconfirmed but
.net Framework 1.1 may need to be installed first.
Issue 2 - Graphical distortion using an NVIDIA 7900 video card
Solution - Install and use the latest beta driver for the 7 series video cards.
Rockstar explicitly points out that the use of Beta drivers is done at one's own risk
Windows XP (32 bit) - 180.70
Windows XP (64 bit) - 180.60
Windows Vista (32 bit) -180.60
Windows Vista (64 bit) - 180.60
Issue 3 - General crashes/freezes
Solution - Install all the latest updates for Windows. Including service packs (SP3 for XP and SP1 for Vista). Close background applications.
Update: 2008-12-04
Rockstar is trying to get all problems of the GTA 4 PC version solved as fast as possible. On the
GTA 4 support site of Rockstar Games several issues and their solutions have been listed.
The chart below shows all currently known problems and possible solutions.
RMN20 - Windows Vista: Need to have Service Pack 1 or higher to proceed.
RMN30 - Windows XP 64 / Server 2003: Need to have Service Pack 2 or higher to proceed.
RMN40 - Windows XP: Need to have Service Pack 3 or higher to proceed.
DD3D50 - D3D Error - DirectX 9 video card required.
TEXP110 - D3D Error - Failed to create texture - Please restart the game.
DWIN20 - D3D Error - Failed to query memory. Please re-start the game.
DD3D10 - D3D Error - Please re-boot your system.
DD3D10 - D3D Error - Please re-boot your system.
DD3D30 - D3D Error - Please re-boot your system.
DWIN30 - D3D Error - Please re-boot your system.
DD3D20 - D3D Error - Please re-install the game and/or re-install DirectX.
DWIN10 - D3D Error - Please restart the game.
DD3D60 - D3D Error - Shader Model 3.0 or higher is required.
DD3D70 - D3D Error - Unable to retrieve D3D Device. Please re-boot your system.
GPUP10 - D3D Error - Unable to retrieve D3D Device. Please re-boot your system.
TEXP20 - D3D Error - Unable to retrieve D3D Device. Please re-boot your system.
TEXP30 - D3D Error - Unable to retrieve D3D Device. Please re-boot your system.
TEXP80 - D3D Error - Unable to retrieve D3D Device. Please re-boot your system.
DD3D40 - D3D Error - Unable to retrieve device capabilities. Please install latest video card driver and/or re-install DirectX.
TEXP10 - D3D Error - Unable to retrieve device capabilities. Please install latest video card driver and/or re-install DirectX.
DD3D80 - D3D reset failed - Please restart the game.
STRB10 - Failed to delete file - Please re-boot your system.
RMN10 - Failed to read file - Please re-boot your system.
STRM10 - Failed to read file - Please re-boot your system.
STRM20 - Failed to read file - Please re-boot your system.
BNDL10 - Failed to write file – Please re-boot your system.
STBF10 - Failed to write file – Please re-boot your system.
VOIC10 - Fatal voice chat error - Please restart the game.
RESC10 - Out of video memory - Please re-boot your system.
BA10 - Out of virtual memory - Please re-boot your system.
EA10 - Out of virtual memory - Please re-boot your system.
TEXP60 - Unable to create color render target - Please re-install DirectX and/or install the latest video card driver.
TEXP70 - Unable to create depth render target - Please re-install DirectX and/or install the latest video card driver.
AE10 - Insufficient Memory to Start Game - Please close some applications and restart the game.
PC10 - Unable to retrieve D3D Device - Please reboot your machine or reinstall your display driver.
TF10 - Unable to write to disk - Please restart the game.
WS20 - InitWinSock failed - Please re-boot your system and/or re-install the game.
WS30 - InitWinSock failed - Please re-boot your system and/or re-install the game.
"
http://www.pcgameshardware.com/aid,6...and_solutions/