Miért akad a gta 4?

Amúgy nekem tökéletesen megy Win7 alatt ezzel a configgal:

proci: AMD FX-4100 3.6 GHZ AM3+ BOX

RAM: KINGMAX 4 GB DDR3 RAM

Videókártya: AMD 6500M 1 GB DDR3

OS:Windows 7 Ultimate 64 bit

Benchmark:

Statistics

Average FPS: 36.42

Duration: 22.41 sec

CPU Usage: 73%

System memory usage: 72%

Video memory usage: 81%

Graphics Settings

Video Mode: 1280 x 1024 (60 Hz)

Texture Quality: High

Shadow Quality: High

Reflection Resolution: Very High

Water Quality: Very High

Texture Filter Quality: Anisotropic x16

Night Shadows: Very High

View Distance: 100

Detail Distance: 100

Hardware

Microsoft Windows 7 Ultimate

Service Pack 1

Video Adapter: ATI Radeon HD 5600/5700

Video Driver version: 8.17.10.1140

Audio Adapter: Hangszórók (Realtek High Definition Audio)

AMD FX(tm)-4100 Quad-Core Processor.