Possible "Adware" in google chrome?

[FrankerZi]

So i have no idea if this is a problem or an adware or something like that but since yesterday sometimes when i click on a website that i searched in google (steam,speed test etc...) the second i click there is a black square without anything just a plain black box apears for a milisecond on the place my pointer is.I scanned my pc with malware bytes and my antivirus just to be safe but it didnt find anything could this be somesort of an adware trying to do something when i click a website (the black box doesnt appear everytime maybe once every 20 clicks)

 

[smorizio]

tried hitmanpro?? look under add in in crome see if something was added.

 

[power2015]

Check for any suspicious Extensions