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Problem (for Laptops only): Wireless broadband was working perfectly but suddenly stopped - and now you have only a message "not connected - no connections are available". The network, router etc are all fine - your other computers and mobiles all connect without problem.
Solution 1: Unplug battery and turn on the laptop with direct power cord. (In this case, you will quickly know that the issue is due to power/battery. You may try out solution # 2 as well if you want to keep using existing battery)
Possible Reason: This happened to me cause the battery had issue with charging and the computer decided to turn off the device thinking it could save power.
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