Hi, Zbavanent.info can be regarded as a pop-up adware which aims to promote certain products and gain illegal income. First you should uninstall related software from Control Panel. Besides it's necessary to remove any unknown browser add-on or extension. Click Tools menu on the right top corner of Chrome browser, click Tools and select Extensions. Moreover, search any file leftovers of Zbavanent.info in the system, and clear them all. You can take detailed steps to completely clean out the trouble.