about 10-12 hours to fully charge

Step 1 - Connect to your primary router Step 2 - Configure the new router Step 3 - Connect the two routers together Step 4 - Configure both routers to use the same Wi-Fi network

You should try another best USB portal and you can also re-install the software.

You should try to off your modem and on after a pause. Then your internet connection will reconnect easily.

In the term of C language when you write or make a programme and then try execute a value at that particular time when your program compile easily but didn't show you any value is called runtime...

I thing you should first check your wi-fi connection of laptop. May be your wi-fi chip of laptop need to repair or replace.