Strange characters on top of products page

[pixel]

When you enter the site it displays fine. Whenever you go to any of my products there are some strange characters at the top. I have looked an a few places but it only shows up on a product. Can someone please advise on this? The image is of the upper left corner of the page by the logo.

[Basara]

Hi.

You have broken code on your product page. If you modify core files try to restore them to originals

[pixel]

I don't think I modified anything... huh

How would I restore it?

[Basara]

Hi.
If you do not modify any files try to disable and uninstall one by one any 3rd party extensions you have installed.