What should I do if the computer doesn't turn on? Which key to press?

Computers are one of the indispensable tools in our daily lives, but sometimes we encounter some troubles, such as the computer suddenly unable to turn on. So what should we do when the computer cannot be turned on? Which key should be pressed to solve this problem? Below I will provide you with some common solutions.

First of all, we need to check whether the computer’s power supply is working properly. A common reason why a computer won't turn on is a power failure. We can first check whether the power supply is plugged in and confirm whether the power cord is connected normally. If we find that the power switch is off, we can try pressing the switch to start the computer. Alternatively, you can try to replace the power cord with a working one to eliminate the possibility of a power failure.

If the power supply is working normally, we can further check whether the computer's hardware connections are loose or damaged. Sometimes, the computer's inability to turn on may be caused by loose or damaged hardware components such as memory, hard drive, or graphics card. We can try to open the computer main box and carefully check whether the hardware connection is good. If loose or damaged hardware is found, the hardware needs to be replugged or replaced.

In addition to hardware problems, the computer's inability to boot may also be caused by operating system failures. In this case, we can try to enter the BIOS interface to make some settings adjustments. When turning on the computer, we need to press a set of keys below the display after the computer is turned on, such as F2, Del or Esc (the specific key to press depends on the computer model and brand). After entering the BIOS interface, we can check whether the boot sequence is correct. If it is incorrect, we need to adjust the hard disk as the first boot item.

If none of the above methods solve the problem, then we can try to use the computer's recovery mode or safe mode to repair the system failure. When booting, we can press hidden function keys such as F8 or Shift F8 (the specific key to press depends on the computer model and brand) to enter recovery mode or safe mode. In these modes, we can restart the computer and then perform corresponding operations according to the system prompts, such as system restore, repair startup, etc.

If none of the above methods solve the problem, then we may need to consider sending the computer for repair. Some faults require professional technicians to diagnose and repair, especially some more complex hardware problems. In this case, we can contact the computer's after-sales service center or a professional computer repair company for help.

Finally, we need to make it clear that the above methods are only for common situations where the computer cannot be turned on. If the computer has other problems, such as crashes, blue screens, inability to enter the system, etc., the solutions may be different. It is recommended that when you encounter a problem, you can try some basic solutions first. If the problem still exists, you can consult a professional.

In short, it is a common problem that the computer cannot be turned on, but there are various solutions. We can solve the problem by checking the power supply and hardware connection, entering the BIOS interface settings, trying recovery mode or safe mode to repair the system, or seeking help from professional maintenance personnel. I hope the above methods will be helpful to everyone so that the computer can start up and work normally.

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