What should I do if the computer shows no signal when it is turned on?

Solution to no signal when the computer is turned on: 1. Check the display signal cable and host interface of the computer host, which can be re-plugged; 2. Check whether the interface and monitor signal cable are damaged, and replace it with a new monitor signal 3. Check the display interface of the motherboard on the rear of the host to remove rust and correct the interface pins; 4. Open the side cover of the host and check each interface of the motherboard; 5. Check whether the memory slot of the computer is firm. If it is loose, pull it out again. Just plug it in; 6. Check the interface between the independent graphics card and the motherboard; 7. If the computer host starts and hears an alarm, please remove the computer memory and check whether the memory is burned out, etc.

The operating environment of this tutorial: Windows 10 system, DELL G3 computer.

I don’t know if you have ever encountered such a situation, that is, the screen shows no signal after the computer is turned on, and then there is no response. Many people will try by constantly restarting. In fact, this will damage the life of the computer. Today the editor has brought you relevant tutorials, I hope it will be helpful to you.

The computer display shows no signal in the following situations:

1. Pay attention to whether the motherboard light is on, whether the CPU fan It won't turn, and the power supply fan won't turn. If there is no alarm, it is estimated that the motherboard may be more damaged;

2. If the CPU frequency set in the CMOS of the jumper-free motherboard is incorrect, it may also cause a no-display fault. This can be solved by clearing the CMOS;

3. The memory stick is not oxidized. Take it out and wipe it with an eraser before inserting it again. The general problem can be solved;

4. Press the BIOS chip on the motherboard tightly to make it tightly connected; if the fault persists, eliminate it;

5. Try replacing a reliable host power supply; if the fault persists, it is the motherboard. There is something wrong with the bus and it needs to be sent for repair.

The computer display shows no signal. Solution:

1. First, check whether the display signal line and host interface of the computer host are loose. If the line is loose, just unplug and plug it again.

2. Unplug the monitor signal and check whether the interface and monitor signal cable are damaged. If the interface and wiring are damaged, just replace the monitor signal cable with a new one.

3. Check whether the display interface of the computer motherboard on the rear of the host is intact. If the monitor interface is rusty or the interface pin is damaged, just remove the rust and correct the interface pin.

4. Open the side cover of the host and check whether all interfaces on the motherboard are intact and whether there are any mice biting the wires.

5. Check the memory next to the CPU on the computer motherboard to see if the memory slot is secure. If it is loose, unplug it again.

6. Check whether the interface between the independent graphics card and the motherboard is loose. If it is loose, please reinstall the graphics card.

7. If the computer host starts and you hear a buzzer alarm, please remove the computer memory and check whether the memory is burned out.

8. If the memory is good, please use an eraser to wipe the metal part of the memory.

9. After the computer host inspection is completed, check whether the display input interface of the monitor is damaged. Mainly check whether the pins of the interface are deformed. If the hardware settings are found to be damaged and need to be replaced or repaired at a professional repair center, the problem of no signal will be solved.

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