Win 10 on Inspiron 5558: Intel Wireless AC 3160 WLAN card not found (disappears) on waking up from sleep

I bought this Dell Inspiron 5558 on Dec 31 2015 with Win 8.1. I upgraded it to Win 10 last July.

Since last couple of months, I am facing this issue where randomly on waking up from Sleep / Hibernate, the OS tries to connect to a network for a moment and then fails and displays that no Wifi card is available. That is, my Intel Wireless AC 3160 Wifi card  randomly goes missing on a wake up, restart / shutdown. Even in the device manager it does not list my WLAN driver, neither in the "netstat" or "ipconfig" commands. My OS behaves as if there is no WIFI device at all.

 I fix it by making the laptop go to sleep and wake up/ shut down / restart etc. After a few attempts, it then randomly detects the device and starts acting normal.

NOTE: This problem kept occuring randomly even after updating the Wifi driver with the latest version from Intel's website. I have also unchecked the "Allow the computer to switch off this device to save power".

My current fix is to disable going to sleep on battery or plugged in. Since I never shut down my laptop until necessary, it only goes to sleep. By disabling sleep, I am not giving the OS a chance to reconnect to the network, fail and then behave as if it has suddenly lost the Wifi card.

But does anyone know a permanent fix to this?