[Help] Nvidia 780 Ti Fan Runs 100%

Hello i have problem with evga 780 ti .. i installed web driver and cuda... but the fans runs at 100% in idle.
i have check the tempetures its everythink works great.

My System CPU: Intel Core i7 3970x LGA 2011 3.50.Ghz (6 Core/12 Thread)
CPU WaterCooling : Corsair H100i
GPU: Evga GTX 780 Ti Superclocked 3GB DDR5
RAM: 32GB G.Skill TridentX 2400Mhz
SSD: Asus Rog RAIDR Express MLC 240GB PCIe Internal Solid State
HDD: Seagate Barracuda 3TB 7.200RPM
PSU: OCZ 1000Watt
ODD: Plextor PX-891SA...

[Help] Nvidia 780 Ti Fan Runs 100%