Network Problem

[ImLostAgain]

This has begun to happen regularly for the last wo or three days. I try to connect to a site, say for instance AB and after searching for a while it comes up with 'server not found'. Sometimes I'll try again and it connects but mostly I have to wait a while. I've tried other browsers and it's the same. I've run the Network Troubleshooter but it finds nothing wrong. Any ideas?
Im running windows 10.

[SlackAlice]

First off, switch off your Router from the mains supply and shutdown pc/laptop. After 30 seconds, restart Router and start your pc/laptop.

If it continues please come back.

[fender62]

as alice said, but shute down pc as well, wait mmm 10 minutes or so
reboot it all.

[Buenchico]

Power cycling your router (as above) is definitely worth a try.

Changing the DNS server that your PC connects to might also help:
https://www.windowscentral.com/how-change-your-pcs-dns-settings-windows-10
(I use OpenDNS)

[ImLostAgain]

Sorry for the delay in replying. After posting my querie I closed everything down for an hour or so. When I booted up again there was my problem re-appearing! When it cleared itself I tried SlackAlice & fender62's solution. All seems well at the moment.
Buenchico, I've had a glance at your link. I may well give that a try. Thanks all.