unknown ap installed on my pc

I received a pm supposedly from a Facebook friend. When I clicked on the link, it installed something called “Sandbox” on my computer. I went to "Add/Remove Programs, but couldn’t find it. I also ran a scan with Avast, but it turned up nothing.

I contacted my friend, and she said she was hacked, and that she hadn’t sent the pm. So, I expect that whatever change it made to my computer was not benign. How can I get rid of whatever it installed on my computer?

Start a topic in V&W and post your logs there: https://forum.avast.com/index.php?action=post;board=4
Instructions (basic diagnostic logs): https://forum.avast.com/index.php?topic=194892.0

Thanks, Asyn! I followed your instructions and posted in the proper place.

You’re welcome.