Oldsmobile/Buick Repair: Power Windows, buick century, master switch

Question
Power windows on drivers side, fron and rear , on my 1999 Buick Century are not working.  What could be problem?

Answer
hi hank .well i don,t know if they both quit at the same time so i will have to assume that they did.if they did then first suspect would be a master switch.assumeing they are all on main switch on dr side door.remove that switch make sure connection on back  of switch is good if so remove plug from switch  at the pin where the two windows switch would be jump those two terminals together a paper clip works good for this.if window will operate replace switch.hope this helps hank   billymac