says missing operatin system



Hi, to try to solve your problem, we need more informations, what make and model of laptop do you have? When did you see the problem, what circumstance happens before the problem.
 
Problems:

1. Your operating system haven't installed

Solutions of this problem:

1. Insert the Windows Installation CD/DVD that boots
2. Install Windows Operating System
3. Follow these steps of OOBE, If OOBE doesn't have, Skip this step
4. Type the username and password
5. See if that fixes