Q: door windows on 1993 BMW 318i

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
i 've got a 93 bmw 318i none of my windows are working ..can all the switches be faulty or is there something other wise thats
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i did check the fuse it's is the master switch what test can i do to see if it's faulty.........