Often, there’s no need to panic.
Save the changes and reboot your rig from the Windows DVD.
After a few moments, you should see the install setup screen.
Select your preferred language, then click Next.
You may have to wait a few minutes while it scans your machine.
go for the bullet option on the top then click Next to use recovery tools to fix Windows.
Now, select Command Prompt from the available recovery tools.
Enter Y to add it, then exit the command prompt and reboot your system when you’re finished.
