as corny as it sounds

Superanitspyware is an awesome free program that i use.

I know your thinking that sounds to damn cheesy to work but..to be honest its the best free program iv used. and iv used pretty much all of them.

Plus its good to have multiple spyware,virus,maleware detecting programs just in case the first program misses one.

http://www.superantispyware.com/


Another good one is Malewarebytes

http://www.malwarebytes.org/

and one more for good measure is Avira

http://www.avira.com/en/pages/index.php


Note all of these programs either are free or have free versions of them self..and they work great. Iv used them all.