Sorry to hear that your unable to sign into Sky Sports.
I can see from your other thread that it you get error message t:6038 / c:4110. This error is normally in reference to Silverlight. Have you tried to uninstall and reinstall Silverlight to see if this works.
If you check the links below it will give you some answers from the community on what they did to resolve this issue. If the message still appears then by all means get back in touch and let us know.