The monitor is turned off, but the host is still running

There are the following aspects:1Electrostatic electricity causes (discharge of CMOS) 2The power supply is unstable (power supply replacement).

3.The voltage control chip of the motherboard is defective (the SLP S3 signal cannot be pulled down to low voltage, or please ask a professional to repair it).

Again, go to Start - Control Panel - Power Options, and turn on the Advanced Power Management section in it.

Again, you see if the computer item in your device manager is ACPI, if not, please update its driver.

Also, in the CMOS Setup program, set the Advanced Power Management item to Use: Enabled

You check the power cord on your computer, and I suspect you're plugged in the wrong way.

It may be a system issue I suggest you reinstall the system

1. Restore the default BIOS settings If not, the next step.

2. Take out the motherboard, clean it up, and check the gold fingers of each functional component;

3. Try a different motherboard.

4. Try changing the power supply.

Obviously, it has nothing to do with the power supply.,If the operating system is fine, it must be the motherboard is broken.,Try to reinstall the system first.,If it doesn't work, you'll have to send your baby machine to."Hospitals"Go!

I've had this problem before.

Excuse me, your system should be some kind of modified version, right? Like I've installed one before is WinXP Px?version, found that the shutdown could not be normal after installation.

The host is still running. The only way to do this is to unplug the switch. This issue is a vulnerability that occurs after the system has modified certain programs.

As long as the original version of WinXP SP2 is installed normally, it will be normal.

It's a problem with your computer's motherboard.,Root mine the same.。。。 Mine was like this when I didn't turn off my computer when it thundered.

The display can be turned off, indicating that the CPU has issued a shutdown command, at least the graphics card is turned off. If both the power indicator and the hard disk working indicator are on, it is likely that there is a problem with the power management (both the power supply itself and the motherboard have power management circuitry).

Here is an explanation, in fact, as long as the power supply of the PC is supplied with 220V power supply, then it is always working, but when the PC is turned on, the power supply is working with load, and the power supply is in standby state after turning off the PC.

The PC on and off is a signal from the motherboard to supply the power supply (on is low, off is high), so you are clear, assuming that the signal line is broken or the contact is poor, or there is a problem with the related components, then the shutdown command output by the CPU is valid for other devices, but it is invalid for the power supply, since the power supply is not broken, the hard disk will continue to rotate, but the system is not working, then the phenomenon is the same as not shutting down.

The machine is too old The reason is that a group of capacitors near the south bridge of the motherboard should be replaced