How I Can Stop/block Unwanted Add In My Pc?

1. Click on Chrome's menu icon in the upper-right corner of the browser and click on Settings.
2. Type "Pop" into the Search settings field.
3. Click Site Settings.
4. Under Popups it should say Blocked. If it says Allowed, click Pop-ups and redirects.
5. Turn off the switch next to Allowed.

Here are the steps:

1. Open Chrome.
2. At the top right, click More. Settings.
3. At the bottom, click Advanced.
4. Under "Reset and clean up," click Clean up computer.
5. Click Find.
6. If you're asked to remove unwanted software, click Remove. You may be asked to reboot your computer.