Check the fuses. If multiple functions go at once, check to see if they have a common fuse. If one function goes, often a wire has broken, often at the door hinge where it flexes most.
Using an '03 as an example, it has the driver's window fuse under the hood on the left, other windows inside by the passenger footwell. The driver's fuse feeds power WHT/BLU to the multiplex then to the Window Control Module behind the door handle, then to the window switch control. On the '03, you can hear the relays in the WCM click. Test for where power should be, and where absent back trace to the fault. Will likely need to pull door panel to test.