There are many potential reasons why your computer won’t turn on. It’s important to diagnose the problem correctly in order to determine the best course of action. Below are some typical causes and solutions to consider when trying to fix a computer that won’t turn on.
1. Check the power cord and the power outlet. Make sure that the power cord is securely connected to both the electrical outlet and the computer. If you are using a surge protector, make sure that it is also securely plugged in and turned on. Try plugging the power cord into a different outlet as well.
2. Check the cables. Make sure all of the cables (such as the monitor cable, the keyboard cable, etc.) are securely connected.
3. Check for loose components inside the computer. Open up the computer case and check to make sure all of the internal components (such as memory, graphics card, hard drive, etc.) are securely seated and connected.
4. Check the fan. Make sure the CPU fan is actually spinning. If it is not spinning, it may be clogged with dust and debris, or it may be defective.
5. Test the power supply. It is possible the power supply is not working properly. You can test it with a multimeter. If the power supply is malfunctioning, you will need to replace it.
6. Boot into safe mode. If the computer powers on but does not boot into Windows, try booting into safe mode. This can often help diagnose the problem.
7. Run a system diagnostic. Most computers come with a built-in system diagnostic tool. Try running this tool and see if it can help identify the cause of the problem.
8. Reset the BIOS. If the computer still will not turn on, try resetting the BIOS settings to their default values. This can sometimes fix problems with the computer’s hardware configuration.
9. Check the Motherboard. If all of the above steps fail, it is possible that the motherboard itself is defective. If this is the case, you will need to replace the motherboard.
If none of these solutions are able to solve the problem, it is likely that there is a more serious hardware issue at play. It is recommended that you seek professional assistance in this case.