Why can t the computer monitor turn on, what is the matter with the computer monitor not turning on

Analysis: There are two situations when the monitor cannot be turned on: the screen is not powered on (the power indicator is not on) or the screen is powered on but there is no signal or "nosighal", the former means that the power is not on or the connection is poor, and the latter is generally the memory module is not in contact or the graphics card is damaged.

Recommendations:1If the monitor is powered on but no signal is displayed, turn off (if short pressing 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, plug in and unplug the memory module again, and wipe the gold finger with an eraser in one direction (the back of the thumb fingernail is also fine), and then turn it on after installation.

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, then consider the graphics card 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 look at the back of the monitor, plug the power cord connected to the monitor upwards, and check whether the other end of the power cord is powered on to the socket. 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, the monitor is damaged and needs to be repaired.

Want to know why the computer won't turn on the monitor, here's what I brought about it, welcome to read!

Monitor no display, also known as black screen, is the most common fault phenomenon of a display. Usually, the black screen caused by hardware failure mainly occurs at startup, and the black screen that occurs during use is mostly caused by software. This article mainly focuses on the solutions of the former, and the solutions provided below can be carried out in order until the problem is solved.

1. Check whether the power supply of the monitor is connected and powered on.

There is a "click" sound when the monitor is powered on. If it is not properly connected, please connect the power supply of the monitor and then turn it on for checking.

2. Check whether the display brightness, contrast, and display position knobs are adjusted in the normal position.

3. Check whether the contact between the display signal cable and the graphics card is good.

If it is not connected, connect the display cable to the graphics card.

4. Change to a normal display.

5. Check whether the contact between the graphics card and the motherboard is good.

If the graphics card is not in good contact with the motherboard, check whether the motherboard slot is damaged and causes a black screen.

6. Change the graphics card to a motherboard slot and then turn it on.

7. Change a working graphics card.

8. Whether the memory is in good contact with the motherboard.

If the memory is not in good contact with the motherboard, check whether the black screen is caused by a memory failure.

9. Whether the CPU is overclocked.

If the CPU is overclocked, please revert back to the original frequency of the CPU.

10. Expand the display to see if the memory plugging is normal.

If the expansion display memory is not plugged in properly, please try to connect the video memory again, if not, please replace the video memory.

11. Whether the driver signal line is connected normally.

If there is a situation where the driver signal cable is reversed, please correct it immediately.

12. Please ask professional maintenance personnel to deal with it.