Fingerprint Sensor Not Found

I’ve Installed win – 8.1 Pro N in my VAIO-VPCSB36FG and then My fingerprint sensor is not working anymore. I’ve visited Sony website and there is no updated driver for fingerprint sensor for windows 8.1 Pro 64-bit

Please help me. My previous OS was – windows 7 Home premium 64 bit with Truesuit Fingerprint sensor

pleas help me as soon as possible