Did they mean notifications in the lower right side of the screen? I just had the same problem and sorted it as detailed below. (Not sure why Tomshardware/guide "offers" - it is hard to imagine many people wanting something to block the content they're seeking, but that's another topic!)
Go to Chrome settings:
Settings > Privacy > Content Settings > Notifications > Manage Exceptions
Change "https

/tomsguide.os.tc"/"https

/tomshardware.os.tc" from "Allow" to "Block".