I was downloading some software from the internet and i must of got the wrong link because i downloaded a virus. Upon installing this official looking program it removed my admin rights, disallowed me to open cmd even in safe mode. Now upon booting my computer i can only see a black screen that say "This Computer is Locked" and then a space beneath for the admin to put in a password with two buttons, unlock and get password. The Get Password button links me to a website where it asks me to complete a large amount of surveys.
Where it links me to : http://gotlinks.co/2zCz
Here is a screenshot of my desktop, its all black apart from this window: http://snag.gy/RJ9eu.jpg
Thank you all in advance.