The problem of the computer starting up but the screen is not showing up can involve several aspects, and the following are the specific analysis and solutions:
1.Display issues
If your monitor's power light is on, but the screen still doesn't show, the monitor's backlight or other internal components may be damaged.
Workaround: Try adjusting your monitor's brightness and contrast settings to see if they change. If it doesn't work, it may need to be professionally repaired.
2.Cable issues
The cord connecting the computer to the monitor may be loose, broken, or damaged.
Solution: First, check that both ends of the cable are securely plugged into your computer and monitor. If you're using an HDMI, DisplayPort, or VGA cable, try replacing it with a new cable.
3.Graphics card issues
The graphics card may fail due to overheating, aging, or driver issues.
Solution: First check if the graphics card is plugged in properly and clean the dust on it. If it's a laptop, it may need to be professionally repaired. For desktops, you can try updating the graphics card driver or reinstalling the driver.
4.Problems with memory modules
The memory module may not be plugged in properly, or it may be damaged.
Solution: Power off the computer, open the case, and check that the memory module is securely inserted into the slot. If you have more than one memory module, try to test with only one.
5.Power issues
An unstable power supply** or insufficient power may cause your computer to not start properly.
Solution: Check that the power plug is securely inserted into the outlet and that the power cord is not damaged. If possible, try replacing it with a more powerful power supply**.
6.BIOS setup issues
Incorrect BIOS settings may result in boot failure or no display of the screen.
Solution: Press the BIOS setting key (usually Delete, F2, F10, etc.) when the computer is turned on to enter the BIOS setting interface. Look for options related to display or startup and reset to the default settings.
7.Operating system issues
Corrupted operating system files or missing startup files can cause your computer to not boot properly.
Workaround: Try to repair using the recovery function of the operating system. If recovery is not possible, you may need to reinstall the operating system.
For each of these problems, a workaround is provided. In practice, it is recommended to follow these steps:
1.First, disconnect the power supply from your computer to make sure you don't cause further damage while operating.
2.Based on the above analysis, check each possible problem point one by one and follow the provided solutions.
3.When performing hardware replacement or repairs, make sure that you are using parts that match the originals to avoid further problems caused by incompatibilities.
4.If you are unsure about a certain step or do not feel confident to operate, it is recommended to seek professional help to avoid greater losses due to improper operation.