How to update Drivers for L640XL?

[sumukh phalle]

My 640XL isn't connecting to PC. It shows only charging but not shows phone memory or sd card. I was searching for L640XL drivers on Microsoft site. But i didn't get it. Phone was able to connect when it was on WP8.1 but after W10 update, it fails to connect. Hard reset or soft reset doesn't resolve this issue. Isn't there any way to update or download new drivers for PC? Both PC and phone on latest update of Win 10.