The free malwarebytes is your best bet but you could try this .
Use the download button at the bottom.
You are going to have problems with any software you try to download as it will try and stop it.
So maybe wait until you can get the proper information that you need.
If you have any Anti-Spyware programs installed try running them in safe mode.[Just keep tapping F8 as the computer starts and use the keyboard up down arrows to navigate to safe mode.]