Board Thread:Questions and Answers/@comment-81.140.32.198-20130805193153/@comment-3075738-20130805204101

Your computer cannot run MS-DOS because it has inappropriate access abilities.

E.G: Not being a Domain Administrator on your computer.

You need to change your User Account Access Privileges via the system's Administrator and change your access levels.

TL; DR You're not the computer's administrator, and lack access levels.