Hello .
If someone is still suffering from this problem , Here's a simple but effective fix !
Firstly , on the desktop , Right click and choose "Graphic Properties" (There will be an Intel icon near it) So click on Graphic properties that has Intel icon near it .
Next , Click on "Display" tab . Click on "Custom Resolutions" .
There will be a warning . Just continue by pressing "Yes" .
Under "Add" tab , Enter the following .
In width box : 800
In height box : 600
In refresh rate box : 60
That's all you need to do . Just click "Add" button located in the bottom right corner and add it . Close the graphic properties .
Open GTA Sanandreas and Enjoy
. Thank me later
(Note , you can change the resolution in > Settings > Display Settings > Advanced Display Settings > Resolution)