The main unit turned on the display and did not respond to what happened 10

Problem analysis: There are two situations when the computer boots up and the monitor does not respond: the display is not powered on (the power indicator is not on) or the display is powered on (the power indicator is on) but there is no signal or the screen shows "no sighal", the former means that the circuit is not working, or the power interface or power cable is in poor contact or damaged, and the latter is generally a loose or oxidized memory module and poor contact, or the display data cable is not in good contact, or the memory, graphics card, display or data cable is damaged.

Handling suggestions:1If the monitor is powered on but no signal is displayed, turn off (if the short press of the power switch is invalid, press and hold the switch until the power indicator goes out or directly unplug the power cord) Power off the case, replug and unplug the memory module, and wipe the gold finger with an eraser in one direction (the back of the thumb fingernail is also fine), if possible, it can also be installed in different memory slots, and then turned on after installation (before operation, you should also touch the wall with both hands to release your static electricity or wear anti-static gloves).

If you don't know how to operate, then it's simple: slap or kick the chassis once or twice (pay attention to the location: the front of the shell on the left and right sides of the chassis that has no interface at the back; Attention Tract:

Don't push too hard, and certainly don't be weak). The above may need to be repeated, and if it doesn't work, you need to replace the memory module. If you have more than two memory modules, you need to test them one by one.

2.If the above operations do not work, turn off the power and turn on the chassis, reinsert the graphics card, and plug in the data cable between the monitor and the graphics card. If it still doesn't work, consider that the cable or graphics card is damaged, then replace it with a new one.

3.If the monitor is not powered on (the indicator light is not on), check whether the power switch is turned on, then check the back of the monitor, plug the power cord connected to the monitor upwards (the power cord can be replaced if possible), and check whether the other end of the power cord is powered on to the outlet.

4.If the display can be displayed when connected to another monitor or the display of this machine is connected to another normal host and still cannot be displayed, it means that the monitor is damaged and needs professional repair.

Suggested workaround:

1. If there is a problem with the connection cable between the monitor and the host, you can replace the connection cable between the monitor and the host, or plug the plug back in.

2. If there is a problem with the power socket, you can replace a high-power power socket to solve the problem that the display does not respond after starting.

3. After turning on the host, if it is dust that causes the problem, it can be cleaned up in time.

4. When the memory of the computer is loose or snapped, you can clean up the memory, or contact the maintenance personnel to replace the memory. After replacement, put the memory modules back on the motherboard in turn, bring the panel of the main chassis, and tighten the main screws, so that the problem of the monitor not responding after booting can be solved.

The computer host turned on the monitor and did not respond to the no signal for the following reasons:

Reason 1: It is possible that the connection line between the desktop host and the monitor is not in good contact (especially if the interface is not plugged in or loose), and there may be a problem with the number of socks connected to the wire, so there will be no signal input to the screen, no display, and black screen.

Solution: Just plug in the connected cable again, or replace the cable.

Reason 2: Due to the formation of an oxide layer on the surface of the gold finger of the memory or independent graphics card, the memory and the memory slot are in poor contact, and the graphics card and the graphics card slot are in poor contact, resulting in a black screen and no signal output.

Solution: You can turn off the power first, open the compartment, dial out the memory, use the eraser to wipe the part of the gold finger (that is, the place where there is a copper sheet) back and forth a few times, and then insert it back into the inner Biheng memory slot (or insert it back with another memory slot), and it's OK. If you have an independent graphics card, you can also use the same method to deal with the graphics card, and then insert it back into the graphics card slot.

Common reasons: 1. There is a problem with the power cord connection of the computer host. 2. The switch of the display is off. 3. There is a problem with the contact of the display power supply or the display data cable.

You can first observe the computer, turn it on, and check whether the power indicator is bright, if it is not lit, there may be a power supply problem, then you can observe whether the power cord of the computer host is well connected to the external power supply, whether there is a problem with the line, etc.

On the other hand, if the computer indicator light is bright and the CPU fan is running normally, you can judge that there is no problem with the power supply, so let's understand the basic situation of the display, that is, whether the indicator light is bright, whether the data cable connection is good, etc. At the same time, it is necessary to observe whether there is a problem with the host, that is, to check whether the indicator light of the computer keyboard and mouse is bright, if the host is normal, the problem is mainly caused by the display, such as the switch is not turned on, the data cable is not well connected, the power supply is problematic and so on.

Through the above simple troubleshooting,If you still can't solve the problem,You can solve it by replacing the method into the collapse mountain,If you guess it's a problem with the display,You can try to compare it with a good one,If the problem still exists,Then replace the display data cable,If it's still invalid,It can be proved that there is a problem with the host,In this way, the fault can be eliminated in turn。