Hello. This is my 1st post so please bare with me...my desktop computer has been infected with a virus that keeps changing the background/appearance of my desktop. I am now getting a black background with a message that reads: Warning Dangerous Spyware... and every few minutes a Warning Security report appears in the task bar." I have tried downloading walwarebytes and something from pc tools and although I can down load programs, I can not run them. When I click run I get 16+ Application Error messages that read "Exception EInvalidOp in module mbam-setup.tmp at 778500D5. Invalid floating point operation" How do I fix? Please help!