https://goo.gl/images/9XS8m3 this is exactly what it saysAre you sure that is the exact message you get? Data Manager is missing? Or are you using your own term there and it's not exactly what is there? Does not sound like any windows boot up error I have seen.
https://goo.gl/images/9XS8m3I have a Dell inspiron mini 10 with windows 7. It says data manager missing ctrl alt Del. I tried to press f2 actually all of them it got to setup and when I click diagnostics the same pops up