hi i want to know maybe someone now how to rename dxgi.dll (lib) in other name , cuz bf3 pb kicking 4 dxgi.dll , help pls

It wouldn't work. Maybe try Dx9? I don't even remember if BF3 has a Dx9. I guess they added dxgi.dll to punkbuster block list, or server admins are doing it. Either scenario, it's a dumb block.

It's most definitely the server admin that blacklisted the dxgi.dll. There is no way around that. Except.. asking the admin to remove the .dll from the blacklist.