HGFR virus. Or something? And it's awful?

[Autumn.]

Okay, so I'm pretty sure this happened because of my negligence in picking a secure website to watch Frozen online, but ANYWAYS

I'm at least 97% that my laptop has some wicked virus that opens ads all the time and gives me new popups to worry about. I can't even open a link without avast popping up and saying, "Threat has been detected"

The starter link that leads to the popup ads said "hgfr", so I googled it (and guess what? snap.do decided to be my search engine. Which, btw, there's no extension of snap.do or program that can be removed) and I read an apparent "half hoax/truth" chain letter that says that hgfr is a destructive virus that's can steal identities and so here I am kinda shaken up because as it is I'm a struggling college student who's buying books on amazon and my facebook of course has all sorts of information so soidjaoisjdaoisjd

MICROSOFT EXPERTS, HELP.

[Insane_mad_maniak]

Malwarebytes
http://www.malwarebytes.org/

download, install, update and then do a full system scan, delete what is found.

after run a full system scan with Avast.

[Mojó]

One hidden treasure of Avast is the Boot-time scan. Open Avast> click scan> select boot-time scan> go down to the settings link on that same tab (blue link). Select all Hard drives> click the heuristics graph to the high setting, both boxes selected below, and move all threats to chest. Click OK, then start> Selecting yes will reboot your computer and do a rather thorough scan. Also run a full scan with Malwarebytes in safe mode.