I can ping the internet, but can't access any websites - IE, Outlook etc all refuse to connect.

I'm using a Belkin wireless router/modem
XP

This computer has connected quite happily before and just stopped quite suddenly. It won't connect even if I use a cable.

Any suggestions? I've already restored to a point where it was working, but still the same problem.

Hi Ian, it sounds like your firewall may be blocking things, can you try connecting when its disabled to confirm if this is the problem  

Hi Sandra,

I've disabled the firewall already....

I set them all to default - just in case - but no.

Anyway, there's other progs like Mailwasher can't connect either so I don't think it's that.

Keep thinking though!

What firewall do you have, Ian?  I only ask, because some of them have a setting, whereby simply disabling the firewall, while running, will block all internet connections by default, as a security measure.  Sygate does this.  To completely eradicate the firewall from blame, try going into it's options, disabling it from starting with Windows, then reboot.  If you can then access the web, it will prove whether your firewall is blocking, or not.

You said the signal strength is excellent so I assume you are now trying it on wi fi not ethernet ?
I would concentrate on getting it connected via ethernet first then once thats ok sort the wi fi out as that would only be the encryption to check.

Sorry Ian but I cant think of anything else to suggest or try  

It sounds as if the firewall in the router is blocking access to everything bar the Ping from the offending machine. I take it you've tried cycling power on the router - failing that if you connect into it (192.168.0.100 ?) and check the settings there.

You should be able to access the router via ethernet on any pc connected to it Ian.
Try right clicking in the LAN connection of the pc thats not working and select the repair option.
Try a different ethernet lead.
Try a different router port.
If all those fail then run the network wizard again.
If you cant access the router itself then its a fault on that pc or its port.
Has anyone been into the bios on that pc and disabled the onboard ethernet port  
That wouldnt explain the wi fi side not connecting though but we may get somewhere, especially as the ethernet side should be easier to sort out :doggie: