Please Help. I'm using windows 10 on SPro 3. Icons on Start was just normal before. I can remove, pin new app, or rearrange it anytime I want. But suddenly some icons gone, and I cant move and pin any other app, the rest icons stuck on the place and cant be moved. If I touch the icon, it only shows menu button, but no delete button. If anybody know how to solve this, please help. Thanks in advance.