Import error convnet

[assadRasheed]

Trying to run cuda convenet using my own dataset in order to train my model . but got the following error .googled alot but failed to get answer. i am getting the following error in convent.py file .although i have installed cuda tool kit vs etc but unable to understand why this is happening

Importing cudaconvnet._ConvNet C++ module

ImportErrorTraceback (most recent call last)
in ()
101 print "========================="
102 print "Importing %s C++ module" % lib_name
--> 103 libmodel = import(lib_name,fromlist=['_ConvNet'])
104
105 class ConvNet(IGPUModel):
ImportError: No module named _ConvNet