What's wrong with Windows computer not starting?

php editor Youzi introduces to you: When your Windows computer cannot start, it may make you feel very troubled and worried. There may be many reasons for failure to start, such as hardware failure, system file corruption, virus infection, etc. In this article, we will provide you with some common solutions to help you solve the problem of Windows computer not starting. Whether it's a black screen, blue screen or system crash, we'll provide you with detailed steps and suggestions, hoping to help you get your computer back up and running as quickly as possible.

As a non-professional maintenance personnel, how to solve the problem that the computer cannot be turned on?

To be honest, Xiao Cong cannot answer your question exactly. However, this article provides some common and easy-to-operate methods that can help you find the right idea and troubleshoot when your computer won't turn on.

It is recommended to save this article in case of emergency.

The following method works on both desktop computers, laptops, and all Windows systems.

Contents:

1. Basic detection (power on, connection problems, etc.)

2. Listen to the prompt tone (the most orthodox detection method )

3. Basic principles (to avoid hardware damage during maintenance)

4. Automatic shutdown and infinite restart (automatically shut down or infinite restart after pressing the power button for a few seconds)

5. Boot loss (NTLDR ismissing appears)

6. Reset CMOS (various error codes appear)

7. Windows error (blue screen and error)

8. Windows stops (the Windows icon appears but stops suddenly)

##01

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Basic Detection

#If the computer fan, power light, screen, etc. do not respond at all after pressing the power button, it may be because there is no power at all. For desktop computers, please try to unplug the power cord and reconnect it. There will be a power switch on the high-power power supply of desktop computers. Make sure the switch is turned on.

O is off, - is on

Please make sure the battery of the laptop is still charged. It may be that you forgot to turn it off after the last use and the battery was exhausted. Please charge it for 30 minutes before trying again. Power on. If your notebook uses Type-C charging, some Type-C interfaces do not have charging functions. Make sure you use a rechargeable interface.

In addition, remember to check whether there is a power outage and whether the socket is powered.

If the power fan starts and rotates after pressing the power button, the indicator light also lights up, but the external monitor does not respond. You should check that the monitor is on and receiving power. The monitor power cord and the connection cable between the monitor and the computer can be unplugged and reconnected.

After the computer is turned on, power on the monitor. If the monitor lights up with a yellow light and the screen displays "No Signal", it is likely that the computer and monitor are not connected. If the computer has a discrete graphics card, the monitor cable should be connected to the discrete graphics card, not the motherboard. Many people make this mistake. (If you don’t have a separate display, connect it to the motherboard)

Many monitors support connecting to multiple devices at the same time. Switch the input source in the monitor settings to ensure that the computer and monitor are connected.

It is difficult to solve the problem of unresponsive laptop monitor. If possible, you can try to connect an external monitor, projector, etc. to the laptop. If the external device is normal, it means there is a problem with the laptop monitor.

Also check whether the brightness of the laptop's display is sufficient. Sometimes the laptop screen is not black, just because the screen is too dark.

02

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Listen to the prompt tone

When the computer is turned on Usually there will be a beep sound. If it is a short beep, it means everything is normal. But when your computer won't turn on, there may be a series of beeps that tell you what's wrong.

You can check the motherboard manual to understand its specific meaning. If you don’t have the motherboard manual, you can also find it on the motherboard official website.

It is entirely possible that your computer does not emit any beeps at all, so continue reading.

##03

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Basic Principles

Troubleshooting is the most important thing is the control variable. Before continuing with the following operations, you should unplug all USB devices, leaving only the power cord and monitor cable, and try to see if the computer can be turned on. If that still doesn't work, try disassembling the phone.

For the safety of your body and the computer body, you must disconnect the power supply every time you disassemble the machine and adjust the hardware!

The most common method is to remove all components except the CPU and reinstall them. CPUs are hard to fault and expensive, so generally we leave them alone unless you are 100% sure there is something wrong with the CPU.

According to the principle of control variables, only basic hardware should be installed when reinstalling. If there is a core graphics card, do not rush to install a discrete graphics card; only install one memory stick and hard disk; you can temporarily not install a heat sink.

If it can boot with minimal hardware, then gradually increase the number of hardware, adding only one piece of hardware at a time, and then test whether it can start normally until the problem is found.

If you are not sure about your hands-on ability, or your computer is a laptop that is inconvenient to disassemble, Xiao Cong recommends leaving it to professionals.

##04

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Automatically shut down and restart indefinitely

After booting The fan rotates, the light turns on, and then turns off after a period of time (about 1s-30s). After turning off, it is sometimes accompanied by self-starting, and so on.

This situation may be due to a short circuit! Be sure not to try to turn it on repeatedly! Otherwise, there is a risk of scrapping the hardware!

A short circuit may occur when a component in the chassis has abnormal connection or contact. For example, the outer sheath of the power supply line is damaged and causes direct contact with the motherboard, or the motherboard directly contacts the chassis shell, etc. The motherboard and chassis There should be isolation copper pillars between them, and check that the installation is complete.

In this case, the only way is to disassemble and reinstall. However, there are two places you can check before disassembling the machine.

The fact that the computer can start up in a short time does not mean that there is no problem with the power supply. If you have an extra power supply on hand, you can try replacing it first.

The power-on button may be stuck or short-circuited, causing the button to be pressed at any time, and long-pressing the power button will cause the computer to shut down.

##05

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Boot lost

The computer can be powered on, However, the system cannot be entered but a boot repair prompt is displayed. Common: NTLDR ismissing words.

This is because the BIOS needs to read the system's boot file to load the system correctly. If the boot file is missing or wrong, the system cannot be entered.

At this time, repairing the boot or reinstalling the system can be done.

For how to repair the boot, you can read this article:

If the computer cannot be turned on, don’t rush to reinstall the system. Try boot repair first.

If there are other prompts and you are If you don’t understand English, you can directly open the translation software or Baidu’s first line of text.

##06

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Reset CMOS

If the computer can Power on, but unable to enter the system, such as the above automatic shutdown or display error, may be due to indescribable compatibility issues or BIOS setting errors. BIOS can be understood as the system before the operating system is started. It is used to load the operating system and manage hardware.

This problem is relatively simple and worth trying.

If there is a CMOS reset switch or button on your motherboard, you can reset the BIOS directly by using it. If not, find a flat silver battery on the motherboard and remove it, then press and hold the computer power button for 30 seconds to ensure that the motherboard is completely discharged, and finally put the battery back on the motherboard. Try to start the computer.

It should be noted that if you have set the BIOS before, this operation will restore it to the factory state and needs to be reset.

If your computer has been used for more than 3 years, you can replace the motherboard with a new battery (not necessary). You can usually buy the old battery at a hardware store.

##07

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Windows error

When the Windows system has Starts loading, but suddenly blue screen or infinite restart. This situation is called a STOP error, commonly known as the blue screen of death. This happens because the Windows system has experienced a critical error and must stop loading the system.

The blue screen of death is usually related to the driver or hardware. You can determine the cause directly through the blue screen code. Same as above, if you don’t understand the code, you can use Baidu or translate it.

If it is a hardware problem, you can try to reinstall the hardware or replace it with a new one. If it is caused by software, it is not easy to directly deal with the source of the fault when it cannot be turned on. Almost the only options are the following.

Reinstall the system to solve the problem from the root. For specific operations, you can check this article:

The simplest way to reinstall Windows 10, just use the mouse

Restore the system and roll back to the previous system version. For specific operations, you can check this article: Problems occur after Windows 10 update? Revert to the previous version

08

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Windows Stop

If you load Windows by shutting down or restarting directly, there will be no prompt. There is no way to tell what went wrong. In addition to reinstalling and restoring, you can also try to repair or remove the virus.

Repeatedly try to turn on Windows after shutting down. If Windows fails to start normally for many times, you will be prompted to load recovery mode, and then choose to enter safe mode.

Then try to repair the system according to the method in this article:

Why bother to reinstall? Use Microsoft's official "System File Checker" to solve computer size problems!

If you cannot enter safe mode, just reinstall the system.

Finally, don’t worry if you are unable to repair your computer. In most cases, your files will not be lost. You can remove the hard drive and install it on another computer to copy the important files.

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