Satellite U920T - give up the wireless connection

My U920T Satellite seems to sporadically abandon its Wi - Fi connection and returns to 'limited' connection providing internet access. This is the case on two wireless networks my home and work.
Can anyone offer advice please?

Thank you

Are you using the original pre-installed OS that you got with your laptop?
Installed the latest WLAN driver?
Is the situation even when it is used with the battery or the power supply?
For testing purposes you tried to restart your home router and check if the same thing happens again?

Tags: Toshiba

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