Three days ago I set up a new windows 8.1 laptop for a friend and everything was working properly. Now it is unable to access any web pages using http protocol, although there is no problem with https.
The problem occurs whichever browser is used (though they give different messages), IE says 'this page can't be displayed', firefox says, 'this page isn't redirecting properly' and chrome says 'this web page has a redirect loop'.
I've reset internet options. I've tried with the (windows) firewall turned off. I've tried with the AV (Avast) turned off. I've even tried it in Safe mode with networking and always I get this same effect.
The event viewer shows nothing of interest. No updates seem to have been installed since it originally worked. I've scanned for malware and it's still totally clean.
The network is slightly out of the ordinary in that a wireless access point connects by cable to the main router but even connecting directly to the main router shows the same problem and also no other computers show this behaviour (though this is the only Windows 8 machine).
I've totally run out of ideas! Why is there a redirect being created in the first place? A simple test I run is to do a google search (that's fine because google is using https) and then click on a result which isn't using https, then I get the error.
Has anyone got any ideas?