The main LAN light is turned off and the light is still on 10

Did you go into the BIOS a few days ago to change the settings?

It may be because the wake on LAN on your motherboard is turned on by you (wake-on-LAN function), in this case, the LAN light will always be on, and if the LAN is suddenly activated during the shutdown state, then the host may automatically turn on. It does not affect the use and is not a warning light.

To use the WOL feature:

1. The network device must support the Wake-on-LAN function.

2. The computer must use ATX power supply.

3. The motherboard BIOS must provide Wake-On-LAN function and provide a dedicated Wake-On-LAN power socket, of course, some motherboards also support PCI slot power supply, so there is no need for Wake-On-LAN power socket.

4. The network card used for network wake-up must support the network wake-up function, and provide a wake-on-lan power socket at the same time, and some network cards support power from the PCI slot without the need for a Wake-On-LAN power socket, such as WD-RTL8139C network card, because it follows the specification, the PCI slot can provide voltage, so there is no Wake-On-LAN power socket on the network card.

This is normal, many computers are like this, don't worry.

If you don't pull the power cord, the motherboard will be charged ......

Many motherboards have two power supplies, a high-voltage power supply (used by the computer during use) and a low-voltage power supply (used by the computer after it is turned off), after the computer is turned off, the low-voltage power supply continues to work and supplies power to the motherboard, so there will be LAN and other continuous light conditions, which is normal;

The screen prompts that the monitor is working in energy-saving mode, press the power switch of the host to turn on or move the mouse, and press the keyboard to wake up the computer.

This prompt is displayed automatically on the monitor and has nothing to do with the computer.

This prompt appears to indicate that the display signal from the host computer was not detected by the display.

The blue light of the host means that the host has been powered on, but there is no output display signal, there should be a hardware fault, and the self-test cannot be started.

This kind of failure is usually a memory recognition problem, or a problem with the BIOS settings.

It feels like a hardware failure, maybe it's a hard drive issue...

There are many reasons why the host won't be opened. Among the faults that can be solved by ordinary families are:

One. Loose memory. As a result, the self-test cannot be passed. You can solve such failures by plugging and unplugging them again.

Two. The graphics card is loose. As a result, the self-test cannot be correctly identified. You can also fix such failures by plugging and unplugging them again.

No signal. It is mistaken that the host computer is not turned on. Actually, if you see such a prompt appear.

Then just connect the cable between the graphics card and the monitor.

Note: When replugging, it is best to use an eraser to wipe the place of the gold finger (that is, the place of the interface) to improve the chance of repair.

The faults that the average family can't solve are:

One. The power supply is damaged.

Two. The motherboard is damaged.

Three. Memory and graphics card corruption (Note: Loose and damaged are two principles, one is just bad contact. The other is that the hardware itself is malfunctioning. Such a situation cannot be solved by replugging and unplugging. ）

If it is caused by the latter several faults, then ordinary families cannot be repaired. Because you need to use maintenance tools such as air guns, soldering irons, etc. Such a failure can only recommend that you send it for repair)