1. export the bookmarks from chrome if they are important to you
2. close chrome
3. go to the directory C:\Users\<user id>\AppData\Local\Google (note that <user id> is the id you use to logon to your computer
4. delete everything in the above directory (it will also delete adblock extension)
5. open chrome
6. install adblock extension (google how to install adblock in chrome, you will findout how)
7. now you can try to see if the videos are working
8. import bookmarks if you need them.
希望对你有帮助。