Wifi Connection

HI,
bought a new HP laptop. Every time I turn laptop on it shows that I have no internet connection over wifi and there are no wireless connections available (even if I am sitting next to router). I then run diagnostic thing and am advised to plug in ethernet, I do this and internet fine.
I then remove ethernet and it automatically connects to my router.
I've made sure all windows 10 updates have been done but it is really bugging me.
what do I need to do please?
tks
 
Might check in device manager to see if there are any yellow exclamation marks under Network Adapters. If none, you might have a switch/key to toggle for internet. Good luck.
 
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