Here is the official list of DLLs that should be present in your (where gta_sa.exe is located):
If you must download individual DLLs, only get what you need, use only reputable sources, and always scan for viruses. For modders, understanding the role of each DLL (ENB, ASI, CLEO) will save you hours of frustration. Download All Dll Files For Gta San Andreas
This repairs protected Windows system files. Here is the official list of DLLs that
Once you have the correct file, follow these steps to place it correctly: Troubleshooting Guide - Multi Theft Auto: Help only get what you need