“WARNING!! OS Crash Report” Popups Won’t Go Away – Virus Removal

Please help! I can't remove WARNING!! OS Crash Document virus via my computer? I are already carrying out everything, bizarrely it even now remains, somehow, mounted on http://eliminatepcbugs.blogspot.com/2015/11/removal-of-adsystemscancom-step-by-step.html my chrome web browser. How to avoid WARNING!! OS Crash Document how to remove a computer virus coming from popping up?