Possible Virus Help

[Jippy]

I have adblock, so obviously I don't get ads on anything, but just recently I have started getting these weird pop up things that say "ads by anti adblock" and I'm 99% sure it's a virus. I have microsoft security essentials and when I do a scan, it says my PC is fine. So does anyone have any suggestions as to how I can fix this?

 

When I google things it does this:
http://gyazo.com/bd08816fdb0253f876a02c6487f6b5c4 

 

And sometimes it will pop up with a white screen that says "Ads by anti adblock" but I can't seem to replicate that right now.

 

EDIT:

It did it just as I posted this:

http://gyazo.com/736bca0b90fd6e4205c41973ed0b41db

 

Thanks!

[C0LL0SS0S]

look into your recent installations and search for software you haven't installed

[Sir Asvald]

I have adblock, so obviously I don't get ads on anything, but just recently I have started getting these weird pop up things that say "ads by anti adblock" and I'm 99% sure it's a virus. I have microsoft security essentials and when I do a scan, it says my PC is fine. So does anyone have any suggestions as to how I can fix this?

 

When I google things it does this:

http://gyazo.com/bd08816fdb0253f876a02c6487f6b5c4 

 

And sometimes it will pop up with a white screen that says "Ads by anti adblock" but I can't seem to replicate that right now.

 

EDIT:

It did it just as I posted this:

http://gyazo.com/736bca0b90fd6e4205c41973ed0b41db

 

Thanks!

Try Malwarebytes

[Jippy]

look into your recent installations and search for software you haven't installed

Nothing seems to be out of the ordinary.

Try Malwarebytes

I will try that and get back to you.

[0x1e]

Some ads can get past ad block. Especially if they try.

 

Update your adblocker within Chrome / FF. It normally fixes the problem.

[Jippy]

Try Malwarebytes

Malwarebytes identified a few threats, and deleted them, but none of which seemed to fix the problem.

 

However, I went into my Chrome extensions after and found that there was one that I never downloaded, or at least know about downloading. 

 

I've had this happen before where a Chrome extension would just appear, I'd delete it and it would come back. So when this problem with these "Anti adblock" things started coming up I continuously checked my extensions but there were only the ones I wanted.

 

So how can I stop these extensions from just coming up randomly despite being deleted?

[Sir Asvald]

Malwarebytes identified a few threats, and deleted them, but none of which seemed to fix the problem.

However, I went into my Chrome extensions after and found that there was one that I never downloaded, or at least know about downloading.

I've had this happen before where a Chrome extension would just appear, I'd delete it and it would come back. So when this problem with these "Anti adblock" things started coming up I continuously checked my extensions but there were only the ones I wanted.

So how can I stop these extensions from just coming up randomly despite being deleted?

Try resetting your chrome settings. It'll delete everything. So backup your files.