Using the computer for a long time will inevitably lead to various problems, such as failure to boot, no display screen… Many users have encountered such problems. At this time, you might find yourself helpless and can only seek help from maintenance personnel. There are many reasons for the computer’s inability to boot, and some of them you can troubleshoot on your own. Below, YUNZE’s editor will share the troubleshooting process for a computer that cannot boot, hoping to provide some reference for everyone. (20 Essential Signals for Chip-Level Computer Repair)
▶ The computer cannot boot, you can first check if it’s still receiving power #
If the monitor or the main unit’s power light doesn’t turn on, first check if it’s an issue with the power cord itself. Try unplugging and replugging the power cord or replacing it with a new one. If that’s not the case, it’s possible that poor contact between various components of the computer is causing the problem. In such situations, you might need to dismantle the computer to examine and clean each component, also checking for any loose connections by reseating them.
Additionally, check if there are any external devices plugged in before starting the computer, like USB drives. If there are any, unplug them before powering on.
▶ The computer cannot start up; it might be due to residual static electricity within the computer’s electronic components #
Static electricity refers to the weak current that remains on electronic components after the power is turned off. In other words, even after shutting down the computer and removing the battery and power source, a faint electrical current may persist within the computer. Despite its faintness, this charge can be sufficient to keep your computer running for a few seconds or even make the fans spin. Static electricity might cause issues like failure to boot, no display screen, or even motherboard short circuits.
Here’s what you can do next:
- For desktop computers, disconnect the power cord. For laptops, disconnect both the power cord and the battery. Press and hold the power button for about 20 seconds, then release it. This will help discharge any residual static electricity inside the computer.
- Next, reconnect the power cord (for laptops, only connect the power cord without the battery) and then turn on the computer.
▶ The computer cannot boot up; it might be due to hardware incompatibility #
Under normal circumstances, when starting up, you will hear a short ‘beep’ sound which is the BIOS self-test sound, followed by the appearance of the boot screen. In case of issues with the computer, the BIOS self-test might produce relevant audio cues. In many cases, we can determine which hardware component is having an issue based on the alert sounds.
Specifically, everyone can refer to this tutorial: Master PC Troubleshooting: Decode BIOS Beep Codes
Above are several aspects of self-diagnosis when the computer fails to start. When issues arise, you can perform basic troubleshooting to identify potential problems. Even if you’re not able to fix it yourself, taking it to a repair shop with an understanding of the issue will help you avoid concerns about being misled.
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