Computer redirects to a random site once a week

[MadDemon64]

I have this strange problem going on with my computer: once a week my browser, google chrome, redirects to a random page. Sometimes it's a "your computer has a virus on it" page, and sometimes it's a "install the latest updates to flash that we are downloading for you right now without your permission" page. It only seems to happen on certain pages (deviantart, tumblr, etc.) and only if I leave that page up on my tab and leave it idle for an amount of time. I keep using various scans and they all come up empty (except for RogueKiller, but that's apparently a false positive). Is there something going on with my computer or do I just have some bad luck when it comes to browsing the web?

 

[bxflow]

Malware most likely. Run malwarebytes

 

[MadDemon64]

Malware most likely. Run malwarebytes

It never finds anything either.

 

[why_wolf]

is your chrome up to date, go to your about page, chrome/help , to check. Also check your extensions to make sure there isn't any BS installed on it.

 

[MadDemon64]

is your chrome up to date, go to your about page, chrome/help , to check. Also check your extensions to make sure there isn't any BS installed on it.

I only see two extensions: Norton Identity Safe and Norton Security Toolbar. chrome/help says that google chrome is up to date (Version 50.0.2661.102 m)

 

[rgd1101]

use ad blocker

 

[MadDemon64]

use ad blocker

Any good free ones?

 

[rgd1101]

adblock plus
https/adblockplus.org/

 

[MadDemon64]

adblock plus
https/adblockplus.org/

Thanks I will check it out.