First of all, Baidu search NVIDIA graphics driver, enter the home page of NVIDIA:

After entering the NVIDIA website, select Driver-GEFORCE Driver:

Enter the driver, select to manually search for the driver of 8600GT model, and select 8 series:

Select 8600GT in the model column:

Select WIN764 bit in the figure to find the corresponding operating system, as shown in the following figure:

Other options are the default options. Click Start Search, and there will be multiple versions of graphics drivers. The latest update date is the latest graphics driver:

342.0 1 in the picture is the latest graphics card driver. Click Download to download and install.