My front power windows don't work at all. on 1992 BMW 325i

My front power windows used to go Up and Down, but now don't work at all. Trying to find if is a electrical problem but can't find the fuses or relays. Any advise please?

Asked by for the 1992 BMW 325i
Check for power and ground at the driver side control switch using a meter or a testlight. Also check for switching if there's power and ground. If there's no power or no ground, you have to check out that part of the circuit. If OK so far, and not action at the front windows, then you need to check to see if there's power and ground switching at the window motors.
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