Computer graphics card fan turns on but monitor doesn't light up

The computer fan is spinning but the screen is not bright

1. When the computer is turned on, there is no response, and the monitor is black, but the fan is spinning. When the computer is turned on, the fan is spinning, and the monitor is unresponsive. If the alarm sounds, there must be a problem with the computer hardware. It is best to use the replacement method to eliminate the problem. The judgment method: Press the uppercase and lowercase switch key on the keyboard.

2. Taking the win10 system as an example, if the computer fan is spinning but the screen and keyboard are not bright, you can solve the problem through the following methods: The computer may be in sleep mode. In sleep mode, the computer will run in a low power consumption state. At this time, the display and keyboard lights are turned off. You can press the power button or the space bar on the keyboard to wake up the computer.

3. If the fan rotates, it means that the power supply has started. There is no image on the monitor. If the computer cannot enter the normal working state, it means that the computer has not passed the system self-test. The motherboard BIOS settings have not been output to the monitor. The fault should be in the motherboard. , graphics card and memory, but sometimes inferior power supplies and damaged monitors can also cause this failure.

There is no display when the computer is turned on, but the fan is spinning!

1. The reasons why the computer is turned on and the fan is spinning but the monitor is not responding are: monitor connection problems, graphics card problems, memory problems, power problems, motherboard problems question. Monitor connection problems The first thing to check is whether the connection between the monitor and the computer is normal.

2. There is a problem with the power supply of the chassis. Please check whether there is a 5V standby voltage and whether the connection between the motherboard and the power supply is loose. If you cannot measure the voltage, you can try to find a different power supply and try it. Motherboard problem, if there is no problem with the above two, then the possibility of motherboard failure is relatively high.

3. The computer does not respond when it is turned on, and the monitor screen is black, but the fan is turned on. When the computer is turned on, the fan is turned on, the monitor does not respond, and there is no alarm sound. There must be a problem with the computer hardware. It is best to use the replacement method to eliminate the problem. , Judgment method: Press the uppercase and lowercase switch key on the keyboard.

The graphics card does not light up but the fan is spinning

The monitor is powered off, or the monitor data cable is in poor contact. Solution: Check whether the monitor's signal cable and power supply are connected normally, and reconnect the monitor and graphics card cables (replace a VGA cable). Graphics card problem (not plugged in properly or the gold finger is oxidized).

If the fan does not spin or spins very slowly, the CPU fan is faulty, causing the CPU temperature to be too high. If the CPU fan is normal, check the power supply. Unplug the power cord first and reconnect it to see if the power cord is in poor contact. If the problem persists, consider replacing the power supply for testing.

If it can light up, it means the problem is on the original motherboard (mainly check the graphics card slot of the original motherboard). If it still does not light up, it is likely that the graphics card is broken (if there is no other motherboard or hardware troubleshooting, you can also check The local repair shop can help check). If it is determined that the graphics card is broken, it is recommended to contact the seller or after-sales professionals for inspection and repair.

The computer cannot be turned on, cannot enter the self-test, and the CPU and graphics card fans are spinning. You can use the following methods to know what the problem is: Observation method, see if the power light of the host is normal. If it can display normally, then it is ok. Troubleshoot the power supply problem, otherwise replace the power supply, or check the power line, socket, etc.).

When the computer is turned on and the monitor does not light up, but the graphics card fan is spinning wildly, it may be due to the following reasons: Graphics card connection problem: Check whether the graphics card is correctly inserted into the motherboard, and whether the power supply and monitor are connected. Monitor connection issues: Check that the monitor is connected to the correct port and that the monitor is powered on.

The fan turns on but the monitor does not respond when the computer is turned on

1. The main reason why the computer host suddenly cannot turn on the machine is because the power cord is in poor contact. Because the host is often moved, the power interface behind the host is in poor contact. As for when the host is turned on, it cannot be powered on normally, causing the host to fail to boot. Solution: Re-fix the power interface on the back of the host and try to turn it on.

2. When the computer turns on and the screen goes black but the fan spins, it is usually caused by poor contact between the monitor cable and memory and other hardware. You can disassemble the computer to check each component, remove dust and reinstall it.

3. The fan rotates to indicate that the power supply has started. There is no image on the monitor. If the computer cannot enter the normal working state, it indicates that the computer has not passed the system self-test. The motherboard BIOS settings have not been output to the monitor. The fault should be with the motherboard. , graphics card and memory, but sometimes inferior power supplies and damaged monitors can also cause this failure.

The computer cannot be turned on and the display light does not light up, but the host can be turned on, the fan is spinning, and the keyboard and mouse are both on. What is...

1. When you find that the computer does not respond when it is turned on, and the power indicator light does not light up, then there is probably a problem with the power supply. You can check whether the power cord of the host computer is connected to the external power supply. The CPU fan inside the computer is running normally. Check whether the monitor power indicator light is on and whether the monitor data cable is well connected.

2. The hard disk indicator light does not light up, and the power and data cables are unplugged. If the LOGO or BIOS information is still not displayed (black screen) after powering on and restarting, continue disassembly and keep only one memory on the CPU motherboard (retain the independent display if there is no integrated display). Restart and try again until the screen is displayed (except for no signal input). Add devices one by one, and finally connect the hard drive.

3. The computer does not respond when it is turned on, and the monitor screen is black, but the fan is turned on. When the computer is turned on, the fan is turned on, the monitor does not respond, and there is no alarm sound. There must be a problem with the computer hardware. It is best to use the replacement method to eliminate the problem. Judgment method : Press the uppercase/lowercase switch key on the keyboard.

4. The power indicator light is on when the computer is turned on, the fan is spinning, and the screen is black with no display and the keyboard light is not on: The memory module may be loose or there is too much dust. You can remove the memory module and use a clean rubber blade. Clean the gold finger of the memory stick and clean the memory slot with a soft brush or leather blower, then install it, the general problem can be solved.

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