Sometime you may have to reset your computer (i.e., Reboot DOS) when it is still running because DOS does not work accurately. To reset your computer you have two choices:
1. Press and hold Ctrl and Alt keys and Press Del after that release all keys restarting PC without switching OFF the power is termed as Cold Booting.
2. Press the "Reset" button that is generally located in the front of the CPU unit. This kind of Booting is termed as Warm Booting.