Browser disconnecting/not working on Windows 11 PC

[techmot]

I have been having problems for the past couple of days with my sons gaming PC where, whenever I open any web browser the browser either can't connect and is very slow loading, or the wifi keeps disconnecting despite other devices connecting OK with the router. The browser I normally use is Opera, but it does the same when using Google Chrome and Microsoft Edge. I've rebooted and restarted the computer several times but it still has problems connecting, often the wifi icon on the task bar at the bottom of the screen keeps dropping out or disconnecting where it says there's no internet available, and after I reconnected and loaded the browser up again it the wifi icon either drops out again or the web page or URL I'm loading says there's no internet. The wifi router is working perfectly. Have I got a virus or malware that's causing this, or is it a system problem?.

The specs of the PC are:

Processor: AMD Ryzen 3 3100 4-Core Processor
Installed RAM: 8.00GB
System type: 64-bit operating system

Edition: Windows 11 edition

[usually_quiet]

Maybe the problem lies with the gaming PC's wireless card. If the PC has external antennas you could take a look at them to make sure they are not loose or damaged. If nothing is wrong there, then you could take a look at this troubleshooting guide on Youtube - https://www.youtube.com/watch?v=xWrMpqUuzJI