"How do I keep getting random advertisements popping up?" or "What do I do if it says I have a virus?"

Some students have been complaining that they have ads pop up on their Chromebook or they are getting warnings about viruses.  This is caused by extensions that they downloaded.  Here is how to remove them.

On the Chromebook:
1. Go to the three dots in the upper right.
2. Go here to Extensions
3. Look for anything with a Trash Can next to it.  These are extensions that were not added by me, but either came with it, or was downloaded by the person using the Chromebook.
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4. Click the trashcan and remove any of those items.