Problem in opening of my facebook account(***@***)

Hello,

I get following message since december 23, 2014
Your Computer Needs To Be Cleaned
It looks like your computer is being affected by malware. We'll help you fix the problem to keep your account secure and prevent malware from spreading to friends.
Malware is software that tries to steal personal information and causes problems when you use Facebook. Clicking or sharing links that contain spam can give your computer malware.

I shall be grateful if someone can help to remove the above message from my facebook account