Could be a fuse or a relay. Here's a relay chart: http://www.theschillings.com/boxrelay.htm
If neither of those work, it may be the window regulator (see this thread Window not moveing down when door handle opened ) or the window motor.
Hope it's all good soon. 
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1987 928S4 Silver Metallic (980)/Navy (TP) 5-Speed
2000 Boxster Speed Yellow/Black 5-Speed
1966 Wife White/Brown Top
1986 Daughter White/Brown Top (Sold!)
1992 Daughter White/Blonde Top
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