People download software and shareware they don’t know the code behind and the risk they take (Viruses, Trojans, worms etc.) by downloading such softwares. This electronic document is to show that we can exploit DOS command (shutdown –h )in Window OS (2000/XP/7/8/10) to obtain a DOS ( Denial of service) Well a denial of all the services as your windows pc is intact but you can’t make use of it anymore. More