There are several possibilities. a/ Clik on the computer icon near the search icon on the smartcenter bar. It will stop OS/2. To restart, Ctrl+Alt+del. b/ Clik right on the desktop and clik on the correct option. c/ nice tools are available and i suggest you to have a look at en.os2.org or www.ecomstation.org (with nice links) ... d/ eCS (ecomstation) is based on OS/2 but with very nice feature and the possibility to have power off the system at shutdown time and more ..