Right click window messed up

Hi

So, when i right click any item in the taskbar the window that apear is messed up. the icon to "unpin from taskbar" and "close the window" are big and out of place. I also think the colors are not what they're suposed to be.

This issue started when i sent my laptop to a tech support store to reinstall windows. This only happens when i right click on an item on the taskbar.

Here is a picture: http://imgur.com/f8AavQF

Thanks in advance