When the monitor does not light up and the keyboard does not respond after the computer is turned on, there may be multiple reasons. The following is a detailed analysis and solution to this problem: Possible reasons
1. Power failure: The power cord is not properly plugged in or the socket has no power. The aging of computer power supply causes unstable voltage and insufficient power.
2. Connection cable issue: The connection cable between the computer and keyboard is loose or damaged. The connection cable between the monitor and the host is loose or damaged.
3. Hardware malfunction: The keyboard itself has faults, such as key failure, internal circuit short circuit, etc. Display malfunction, such as damaged backlight, tube malfunction, etc. The host graphics card is malfunctioning, resulting in no signal input to the monitor. Poor contact caused by loose or dusty computer memory.
4. Operating system or driver issues: Operating system files are damaged or abnormal. The driver program of the keyboard or other hardware device is abnormal.
5. Static interference: Static electricity may cause interference with computer hardware, resulting in unresponsive startup.
6. Dust accumulation: Computers that have been used for a long time are prone to accumulating dust, which may cause poor hardware contact. solution
1. Check the power cord and socket: Ensure that the power cord is plugged in and the socket has power. Try unplugging and plugging in the power cord to turn it on.
2. Check the connection cable: Check if the connection cable between the computer and keyboard is properly plugged in and undamaged. Check if the connection cable between the monitor and the host is properly plugged in and undamaged. If necessary, replace the connecting wire with a new one.
3. Testing hardware: Insert the keyboard into another computer to test whether it is a keyboard malfunction. Try connecting other displays to the host to determine if it is a display malfunction. Check if there are any issues with the graphics card. If there is a dedicated graphics card, try unplugging it and using an integrated graphics card. Check if the memory is securely plugged in, clean the dust near the memory slot, and wipe the gold fingers of the memory module with an eraser.
4. Restart the computer and repair the system: Try restarting the computer and attempting to enter safe mode for system repair. Update the operating system and related drivers.
5. Release static electricity: Ensure that the computer is well grounded, or release static electricity from yourself before using the computer.
6. Cleaning the computer: Regularly clean the computer, especially the hardware interface, to avoid poor contact caused by dust.
7. Check BIOS settings: During the boot process, follow the prompts to enter the BIOS settings interface, check for any abnormal settings related to the keyboard or other hardware, and restore them to their default values.
8. Seeking professional repair: If none of the above methods can solve the problem, it is recommended to seek the help of professional computer repair personnel.
The problem of the monitor not turning on and the keyboard not responding after the computer is turned on may involve multiple aspects, which need to be investigated one by one and corresponding solutions taken. During the process of troubleshooting and solving problems, please pay attention to safety and avoid causing secondary damage.