When the computer displays no signal from HKC, there may be multiple reasons, and the following are some common solutions:
1. Check connection: Confirm that the connection cable between the monitor and the computer (such as HDMI, VGA, or DVI cable) is securely plugged in and not damaged. Try replacing a connecting cable to see if it can solve the problem. Ensure that the connecting cable is connected to the correct interface, such as the video interface of a discrete graphics card rather than the video interface of the motherboard.
2. Check power supply: Check if the monitor power supply is normal and if the power indicator light is on. At the same time, check whether the computer host is running normally and whether the power supply is stable.
3. Check the graphics card: If you are using a discrete graphics card, try unplugging the graphics card, wiping the gold fingers with an eraser, and then reinserting it to ensure good contact between the graphics card and the motherboard slot. If it is an integrated graphics card, it may be necessary to check the relevant components on the motherboard.
4. Updating drivers: Outdated or damaged graphics card drivers may also cause the monitor to have no signal. Visit the official website of the graphics card manufacturer to download and install the latest graphics card drivers.
5. Check monitor settings: In the computer's display settings, check if the correct monitor is selected as the primary monitor. Try adjusting settings such as resolution and refresh rate to see if they can solve the problem.
6. Check for viruses and BIOS: Use the latest antivirus software for a comprehensive scan to eliminate problems caused by viruses. Enter the BIOS settings interface and check if any relevant settings have been changed, such as setting the wrong boot sequence or disabling certain hardware devices.
7. Reset BIOS: If you suspect a BIOS settings issue, you can try resetting the BIOS settings to factory settings. This can usually be achieved through jumper wires on the motherboard or by selecting 'Load Optimized Defaults' in the BIOS menu.
8. Check other hardware: If none of the above methods can solve the problem, it may be due to other hardware components malfunctioning, such as memory modules, hard drives, etc. You can try unplugging the memory module, cleaning the golden finger, and reinstalling it, or check if the hard drive is damaged.
9. Problem with the monitor itself: If all methods have been tried and the problem still persists, it may be due to a malfunction in the monitor itself. You can try connecting the monitor to another computer for testing, or using another monitor to connect to the current computer to see if it can display normally.
If none of the above methods can solve the problem, it is recommended to contact HKC's after-sales service or professional repair personnel for inspection and repair. During the operation, please pay attention to safety and ensure that hardware plugging and cleaning operations are carried out in the event of a power outage.