Win10 tensorflow gpu dont work: Display device: No known devices

I was setting:
1. cuda_8.0.61_win10.exe
2. unzip cudnn-8.0-windows10-x64-v6.0.zip and copy the .dll, .h, .lib in bin 、 include、 lib

the path C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v8.0\


3.add C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v8.0\bin

in% PATH%

but doesn't work on startup Device mapping: no known devices. Device mapping: no known devices. add_yx: (Add): /job:localhost/replica:0/task:0/cpu:0 _retval_add_yx_0_0: (_Retval): /job:localhost/replica:0/task:0/cpu:0 b: (Const): /job:localhost/replica:0/task:0/cpu:0 a: (Const): /job:localhost/replica:0/task:0/cpu:0

my evn: win10, gtx970, TensorFlow 1.2
I tried to reinstall the gtx970 driver but it still doesn't work PLS Help!

C:\Users\Wilker>nvcc -V nvcc: NVIDIA (R) Cuda compiler driver Copyright (c) 2005-2016 NVIDIA Corporation Built on Mon_Jan__9_17:32:33_CST_2017 Cuda compilation tools, release 8.0, V8.0.60

C:\Program Files\NVIDIA GPU Computing Toolkit\CUDA\v8.0\extras\demo_suite>deviceQuery.exe deviceQuery.exe Starting... CUDA Device Query (Runtime API) version (CUDART static linking) Detected 1 CUDA Capable device(s) Device 0: "GeForce GTX 970" CUDA Driver Version / Runtime Version 8.0 / 8.0 CUDA Capability Major/Minor version number: 5.2 Total amount of global memory: 4096 MBytes (4294967296 bytes) (13) Multiprocessors, (128) CUDA Cores/MP: 1664 CUDA Cores GPU Max Clock rate: 1266 MHz (1.27 GHz) Memory Clock rate: 3505 Mhz Memory Bus Width: 256-bit L2 Cache Size: 1835008 bytes Maximum Texture Dimension Size (x,y,z) 1D=(65536), 2D=(65536, 65536), 3D=(4096, 4096, 4096) Maximum Layered 1D Texture Size, (num) layers 1D=(16384), 2048 layers Maximum Layered 2D Texture Size, (num) layers 2D=(16384, 16384), 2048 layers Total amount of constant memory: 65536 bytes Total amount of shared memory per block: 49152 bytes Total number of registers available per block: 65536 Warp size: 32 Maximum number of threads per multiprocessor: 2048 Maximum number of threads per block: 1024 Max dimension size of a thread block (x,y,z): (1024, 1024, 64) Max dimension size of a grid size (x,y,z): (2147483647, 65535, 65535) Maximum memory pitch: 2147483647 bytes Texture alignment: 512 bytes Concurrent copy and kernel execution: Yes with 2 copy engine(s) Run time limit on kernels: Yes Integrated GPU sharing Host Memory: No Support host page-locked memory mapping: Yes Alignment requirement for Surfaces: Yes Device has ECC support: Disabled CUDA Device Driver Mode (TCC or WDDM): WDDM (Windows Display Driver Model) Device supports Unified Addressing (UVA): Yes Device PCI Domain ID / Bus ID / location ID: 0 / 1 / 0 Compute Mode: < Default (multiple host threads can use ::cudaSetDevice() with device simultaneously) > deviceQuery, CUDA Driver = CUDART, CUDA Driver Version = 8.0, CUDA Runtime Version = 8.0, NumDevs = 1, Device0 = GeForce GTX 970 Result = PASS