It's been going of for about 2 or 3 days already. At first, it connects to the internet as usual, but after around 10 - 20 minutes, the internet disconnects and shows 'No internet, secured' message. I can connect to it again by turning on/off the internet or running a troubleshoot. If I run the troubleshoot, I get "the default gateway is not available constantly" and it shows that it is fixed. But again, after 10 - 20 minutes, the same thing happens. If I try a different network, nothing like this happens, and on mobile, the same connection that I'm having problems with on PC, works as intended on mobile.
I've tried the "Network reset"; uninstalling router drivers, unplugging the router.
Any help would be appreciated, thanks.