SD
It looks like it's the router.
I have just tried another router and that works fine. Trouble is it's only got one ethernet connection and it's not wireless.
I still don't understand why my original router just suddenly stopped accepting my laptop hotmail access but the PC continues to work fine.
Regarding your questions..
I haven't copied anything back from my original OS setup. I did a complete wipe and reinstalled all the drivers from the supplied disc.
My connection are
PC.. Wired.
Laptop.. Wired or Wireless
As far as I know the configs are identical for both. I will have to check.
Thanks for your time.