logout means that the system will be issued to clear the current user's request, clear can use other users to log on your system, logout can not replace the restart, can only empty the current user's cache space and registry information. Usage: (1), you need to use another user identity to log on to your computer, this time do not need to restart the operating system, just log off your current users. (2), install new software, change the registry, you need to make the registry effective can use logoff, because each user logged on when the system will automatically reload the registry. (It does not seem to reload at times) (3), the start item changes, need to let him enter into force can use logout re-login, the system will automatically reload the startup project when logged in. (4), in addition to the situation, especially the underlying driver changes, you need to restart the machine, instead of using the logoff operation.
Hot start : The hot start is when the computer is power-up, usually in the event of an abnormal crash in the machine running. The way to do this is to press the "Ctrl+alt+del" key combination. After this, the computer can restart the reset start is when the power is already in the case, if the hot start is not valid, then use the reset mode. Reset start pressing the reset switch will normally save the system running state, clear temporary settings and data, and then point the program pointer to the address of the operating system restart. This is the recommended way to use the system restart.
Cold start : Cold start is when the computer for power-on, click on the power of the host power off to start by controlling a pin on the CPU, forcing the CPU reset, restart the boot operating system, some of the system running data may be lost, Serious causes inconsistent file data to be saved and even destroys the file system. At the same time, some temporary files are saved on the hard disk.
Computer logoff, hot-start, cold-start
