Hi @LBH Welcome to the forums. Sounds like your sons laptop has lost the wireless connection somehow. What network does it say it is connected to? Are all other devices OK?
You already have the username and password if you are otherwise connected.
Thanks for coming back, @LBH . From what you say above it sounds like the wireless card/chip on that machine could have a problem, but that is only a guess as it isn't something I've come across before.
As a check, somewhere on your taskbar (bottom right) there should be an icon which may look like a set of steps or maybe a radio beacon - I don't know which as I've never used HP gear - if you left click on that, does it show a list of possible networks, including yours?
As @jab1has suggested is the WiFi turned off on the computer?
The standard Windows 10 interface is shown at: