Free download any computer vga

no you have to buy a computer. there is no way to download one

If you just want a random vga driver, MS has some, www.nvidia.com, www.ati.com, www.matrox.com . Chances are that none of them will work with your computer though without knowing what video card you are dealing with.

Better thing to do is to fill in some details in your post as to why you want this "any computer vga".