


The display does not respond when the host is turned on and the keyboard does not light up
After the host is turned on, the display, keyboard and mouse do not respond. There are three situations: the memory module is loose or the contact is not good. , dust accumulation will cause the screen to not display. Solution: Unplug the power, remove the memory stick, use an eraser to remove the floating dust from the interface, and then wipe it clean with letter paper.
When the all-in-one computer display does not light up, you can first check to see if the keyboard light is on. Press the upper-case switching key on the upper left side of the small keyboard to see if the keyboard indicator light responds. If so, , it means that the system starts normally and the main problem is the display screen.
Poor contact of the memory stick or graphics card is also a common reason why the computer monitor and keyboard lights are not on. At this time, you can disassemble the computer case, re-insert and unplug the memory stick and graphics card inside, and clean the golden fingers. , that is, the metal cable on the card, the computer can generally recover.
What's wrong with the computer not turning on? The host started up, but there was no signal on the display and the keyboard light didn't light up.
The reason why the monitor does not light up when the computer is turned on and the keyboard does not light up: According to the situation, it is mostly caused by poor contact of the memory or graphics card. Open the case, re-insert and unplug the memory module, and clean the graphics card. The golden finger is the metal cable on the card. Normally it can be restored after booting.
The monitor does not respond when the computer is turned on. This is most likely caused by a computer failure that fails to pass the power-on self-test.
Check the memory: Sometimes poor contact of the memory module can cause display problems. You can try re-plugging and unplugging the memory module to make sure its slot connection is good. Check other hardware connections: Check whether the motherboard, hard disk and other hardware connections are stable. Check BIOS settings: Sometimes incorrect BIOS settings can cause no display.
Check and handle method: It can be seen from the fault phenomenon that the power supply of the host is basically normal (it does not rule out that the host power supply is faulty), but the self-test program in the BIOS failed to start and a crash occurred. You should mainly check the monitor, graphics card, memory, CPU and motherboard.
Analysis: If the host indicator light is on or off, the screen is not powered on (the power indicator light is not on) or it is powered on but has no signal or displays "no sighal", the former indicates that the power supply is blocked or the connection is in poor contact. The latter is usually caused by poor contact of the memory module.
What should I do if the computer display does not light up and the keyboard does not light up but the host is turned on?
The computer screen does not light up when the computer is turned on. The keyboard does not light up. Cause: Depending on the situation, it is mostly caused by poor connection of the memory or graphics card. , open the case, re-insert and unplug the memory module, clean the gold finger of the graphics card, which is the metal cable on the card, and it will usually recover after booting. A damaged host power supply or poor host power supply quality often causes our black screen failure.
Suggestion: If the monitor is powered on but shows no signal, turn off the power and open the case, re-insert and unplug the memory module, and use an eraser (you can also scrape the back of your thumbnail) to wipe the gold finger in one direction and install it. Then turn it on again.
Check whether the monitor indicator light is normal, and check the power cord and switch. Check the connection cable between the computer and the monitor. You can try disconnecting the cable and then reconnecting it.
The computer display does not light up because the display and keyboard lights are turned off, and the display and keyboard lights need to be turned on again. It may also be due to poor contact between the memory module or the graphics card. You need to re-insert and unplug the memory module and graphics card and clean the gold finger.
When the computer display does not light up and the keyboard does not light up, but the host is turned on. You can first switch between upper and lower case on the keyboard. If the indicator light responds, it means the system is normal and the main problem is with the display. Then check whether the display cable is loose, and whether the memory module and graphics card in the computer are loose. If they are loose, just tighten them.
The computer turns on with a black screen, the host is running, and the keyboard does not light up
The computer display does not light up. It may be because the display and keyboard lights are turned off, and the display and keyboard lights need to be turned on again. It may also be due to poor contact between the memory module or the graphics card. You need to re-insert and unplug the memory module and graphics card and clean the gold finger.
When the all-in-one computer display does not light up, you can first check to see if the keyboard light is on. Press the upper-case switching key on the upper left side of the small keyboard to see if the keyboard indicator light responds. If so, , it means that the system starts normally and the main problem is the display screen.
The computer display does not light up because the display and keyboard lights are turned off, and the display and keyboard lights need to be turned on again. It may also be due to poor contact between the memory module or the graphics card. You need to re-insert and unplug the memory module and graphics card and clean the gold finger. When the computer screen does not light up and the keyboard does not light up, but the host is turned on.
Why does the computer turn on with a black screen and the keyboard does not light up? 3 First check whether the wiring is normal. A large part of computer problems are caused by unreliable wiring and poor contact. You can replug and make sure it is secure.
The monitor does not light up when the computer is turned on. The reason why the keyboard does not light up: According to the situation, it is mostly caused by poor contact between the memory or graphics card. Open the case, re-insert and unplug the memory module, and clean the graphics card. The gold finger is the metal on the card. After arranging the cables and turning on the computer, it can usually be restored. A damaged host power supply or poor host power supply quality often causes our black screen failure.
The computer host has a normal keyboard light and no screen display. What's going on?
You only need to re-plug the cable tightly to allow the display to display normally. If the display still does not respond after plugging in the cable, it may be caused by a loose graphics card or dust in the card slot. In this case, you need to disassemble the computer to flush and remove the graphics card or remove the dust.
The computer display does not light up because the display and keyboard lights are turned off, and the display and keyboard lights need to be turned on again. It may also be due to poor contact between the memory module or the graphics card. You need to re-insert and unplug the memory module and graphics card and clean the gold finger.
If the fault persists, the fault may be caused by memory, graphics card, CPU, motherboard and other devices. Then use the plug-in method, swap method and other methods to check whether the memory, graphics card, CPU and other devices are normal. If there is any damaged equipment, replace the damaged equipment.
Analysis: If the host indicator light is on or off, the screen is not powered on (the power indicator light is not on) or it is powered on but has no signal or displays "no sighal", the former indicates that the power supply is blocked or the connection is in poor contact. The latter is usually caused by poor contact of the memory module.
The computer screen does not light up, but the host computer is still running and the keyboard does not light up
1. When the computer screen does not light up and the keyboard does not light up, but the host computer is turned on. You can first switch between upper and lower case on the keyboard. If the indicator light responds, it means the system is normal and the main problem is with the display. Then check whether the display cable is loose, and whether the memory module and graphics card in the computer are loose. If they are loose, just tighten them.
2. The reason is that the keyboard light does not come on generally because the host does not start normally. It may be caused by poor contact between the memory and the graphics card. There is also a small probability that the keyboard is malfunctioning or is not properly plugged into the host.
3. The data cable is loose and the computer screen is not bright but the host is still running. It may be because the data cable connecting the computer screen to the host is loose. You can check whether it is loose. You can try to unplug and plug it in again. If so, If necessary, you can use another data cable to connect.
The above is the detailed content of When the computer host is turned on, the monitor does not respond and the keyboard does not light up.. For more information, please follow other related articles on the PHP Chinese website!

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