When I press enter it takes me to a different page?

[WhoKnows]

I wrote this 4 paragraph page project for my homeschooling teacher, and I went to press enter to send it to her & it deletes EVERYTHING and replaces it with this link- http://www.basicserve.com/b.cgi?bk=H8QuV...XH6y2tllCA ........ I have NO clue what it is? everytime I press enter it DELETES everything and sends that link? I was messaging somebody on Facebook and I went to press enter & It pulled up the link and sent it to them.. WHAT IS THIS?? how do I get rid of it?!?!

[polar vortex]

You've been hijacked. Run your antivirus program. You can also download the free version of Malwarebytes. Here's their link:

http://www.malwarebytes.org/lp/malware_l...pgodWDAAuA

Here's another link that gives instructions for removal:

http://malwaretips.com/blogs/remove-basicserve-virus/