Windows gives some updates time to time. You usually install those updates and make your computer most proficient. Some time ago, Windows has released its Windows 10 anniversary updates. You have also installed Windows 10 anniversary updates in your computer. But if you are getting Windows 10 anniversary update messed up my PC issue then what should you do is the main problem. The issue comes to your computer when you install newer versions over the old version. You will not be able to access the Windows computer anymore until you fix this issue as soon as possible. You can go with some manual processes or you can also install Advanced System Repair tool in the computer.