How to solve the problem when XP system shuts down and becomes restarted?
First, System setup
Windows XP automatically restarts when an error occurs on the system, so that when the user shuts down, the computer restarts when a system error occurs during shutdown. Turning this feature off often solves the problem of automatic restart.
Right-click on "My Computer" on the desktop, select Properties from the pop-up right-click menu, eject the System Properties window, click the "Advanced" tab, and tap the "Settings" button in the "Startup and Recovery" section to eject the Startup and Recovery window. In the System failure section, remove the check box before the automatic restart option, and click OK.
Second, Advanced Power management
As we all know, shutdown is closely related to power management, the cause of shutdown failure is likely to be the power management of the system to support poor results.
Click on "start → settings → control Panel → performance and maintenance → power options", in the pop-up window, enable or cancel the "Advanced Power support" as needed. If you are using "Advanced Power Support" in the event of a failure, try to cancel it, and if the failure occurs, you are using the "Advanced Power support" to try to enable it, the fault will often be solved.
Three, USB equipment
USB device is now a big line of its way, what U disk, mouse, keyboard, modem and so on, everything. These USB devices are often blamed for shutting down the machine. When the shutdown becomes a reboot failure, if you have a USB device on your computer, unplug it and try again, if you're sure it's a USB device failure, it's best to replace the device, or connect an external USB hub to the USB hub, Instead of connecting directly to the USB connector on the motherboard.