If your display isn’t showing anything, there are a few things you can check.
1. Check the power: Make sure that the power cord is plugged in, and that the power bar is switched on. If everything is connected properly and the computer is still not powering up, check if the power supply itself is functioning. To do this, you can unplug any peripherals and plug it directly into a wall outlet.
2. Check the Monitor: Unplug and re-plug the monitor cable from the computer and wall. If your monitor has an On/Off button, ensure that it is turned On. Then try rebooting the computer to see if that helps.
3. Check the Graphics Card: Many computers have an integrated graphics card, so you should check if it is properly seated in the computer. To do this, open up the computer case and remove the graphics card from its slot. Re-seat it firmly and make sure all electrical connections are secure.
4. Check the Display Settings: Make sure that the display settings on the computer are set correctly. You can usually do this by pressing the “Windows+P” keys and then selecting a display option from the list that appears.
5. Check the BIOS Settings: The BIOS is the Basic Input/Output System of your computer, and you can use it to access the computer’s hardware configuration settings. To enter the BIOS, restart your computer and press the appropriate keys, which are usually indicated on the computer’s splashscreen. Once inside the BIOS, look for the display settings and ensure that they are configured correctly.
6. Check for Software Issues: If the display still isn’t working, it could be a software issue. Visit the manufacturer’s website and download the latest graphics drivers for your graphics card. This may fix any software-related issues.
7. Check for Hardware Issues: If the display still isn’t working, it could be a problem with the actual hardware. To diagnose and repair hardware problems, you’ll need to open up the computer and inspect the components.
8. Inspect the Components: Examine the components inside your computer and check for signs of physical damage. Be sure to check the video card, RAM modules, processor and other components. If you find something that looks damaged, replace it with a new one.
9. Check the Connections: Make sure that the connection between the monitor and the computer is secure. If necessary, unplug and re-plug the connection.
10. Take it to a Professional: If you cannot solve the issue on your own, it is best to take your computer to a professional service center for proper diagnosis and repairs.
Overall, diagnosing and repairing display issues can be a challenging task. The best way to ensure success is to thoroughly examine your computer’s hardware, look for signs of physical damage, and reinstall the appropriate software. If nothing seems to work, it may be time to take your machine to a professional repair center.