When we have a problem in Windows Server and have the following error, we can follow these steps:

Error: "Windows failed to start. A recent hardware or software change might be the cause. To fix the problem:

1. Insert your windows installation disc and restart your computer.

2. Choose your language settings, and then click "Next".

3. Click Repair your computer."

 

Use Bootrec to locate Windows installations:

1. We need to boot with the installer of the windows version that the server has installed.

2. Next, Repair your computer.

 

3. Choose an option / Troubleshoot

 

4. Advance Options / Command Prompt

 

5. write de following command

    bootrec /fixmbr  (the operation completed successfuly)

    bootrec /fixboot (the operation completed successfuly)

    bootrec /scanos (Scanning all disk for windows installation)

    bootrec /rebuildbcd (Scanning all disk for windows installation)

                       

                       Add installation to boot list? Yes/NO/All: A (the operation completed successfuly)

 

6. Exit

 

And finally, the server is restarted.