有时，当您打开 PC 时，它可能无法启动，并且您可能会遇到 PC在进入BIOS之前不会^(BIOS)POST的问题。POST一词是指每次打开计算机时都会运行的一组程序。不仅是计算机，一些仪器和医疗设备在开机时也会运行POST 。因此^(Thus)，当您的系统未通过POST时，系统将无法启动。因此，今天我们将了解什么是计算机中没有POST以及如何修复 PC 不会POST问题。让我们开始！

如何修复 PC 不会 POST 问题^{(How to Fix PC Won’t POST Issue)}

在讨论修复 PC 不会POST问题的方法之前，重要的是要了解它是什么以及导致相同问题的原因。

什么是计算机中的无 POST？为什么会发生？
^{(What is No POST in Computer? Why Does It Occur? )}

每当您打开计算机时，它都会进行一次开机自检，^{(Power-On Self-Test)}缩写为POST。该测试包括以下流程和功能：

• 通过多个硬件分析过程确保^{(Ensures hardware functionalities of essential devices)}键盘、鼠标和其他输入和输出外围设备等基本设备的硬件功能。
• 查找并分析^{(analyses the size of main memory)}系统主存的大小。
• 识别和组织所有可启动设备^{(organizes all bootable devices)}。
• 验证 CPU 寄存器、BIOS 代码完整性^{(Verifies CPU registers, BIOS code integrit)}以及一些基本组件，如DMA、定时器等。
• 将控制权传递^{(Passes over control)}给系统中安装的其他扩展（如果有）。

注意：^(Note:)您不一定需要在计算机上安装任何操作系统才能运行POST。

出现此问题是由于以下几个因素：

• 硬件设备故障
• 电气故障
• ^{(Incompatibility)}新旧硬件不兼容问题

您可以从英特尔网页上阅读更多有关它的信息，即为什么我的电脑无法开机^{(Intel webpage on Why won’t my computer turn on)}。

如何识别 PC 未发布但有电源问题
^{(How to Identify PC Not Posting But Has Power Problem )}

您可以通过LED^(LEDs)闪烁、哔声、POST错误代码、哔声代码、错误消息、自检消息等症状来识别 PC 不会发布问题。例如：您可能只看到电源指示灯，而听不到任何声音. 或者，有时，只有冷却风扇运行，PC 无法启动。此外，不同的蜂鸣声将帮助您分析问题如下：

• 单次短^{(Single short)} 哔声 -^{(beep sound-)}系统或 POST 没有问题。
• 两声短促的^{(Two short)} 哔声 -^{(beep sounds-)}系统错误或将显示在屏幕上的 POST。
• 没有哔声 -^{(No beep sound-)}电源或系统板有问题。当CPU或扬声器断开连接时，也可能发生这种情况。
• 连续或重复的哔声^{(Continuous or Repeating beep)} -^(sound-)与电源、主板、RAM或键盘有关的问题。
• 一声长^{(Single long)} 哔声和一声短哔声^{(beep along with a single short beep sound-)}- 主板出现问题。
• 一声长^{(Single long)} 哔声^{(beep )}和两声短哔声 -^{(along with two short beep sounds-)}显示适配器出现问题。
• 单声长哔声和三声短哔声^{(Single long beep along with a three short beep sounds)}-增强型图形适配器^{(Enhanced Graphics Adapter)}问题^(Problem)。
• 三声长^{(Three long)} 哔声 -^{(beep sounds-)}与 3270 键盘卡相关的问题。

按照下面列出的方法修复 PC 不会在Windows 10中发布问题。

方法一：检查电源线^{(Method 1: Check Power Cable)}

第一步是确保充足的电力供应，以排除电气故障问题。旧^(Old)的或损坏的电缆会干扰连接，并会不断与设备断开连接。同样，松散连接的连接器会导致电源中断，并可能导致 PC 无法发布问题。

1. 拔下电源线并尝试将其连接到不同的插座^{(connecting it to a different outlet)}。

2.用电缆紧紧握住^{(Tightly hold)} 连接器。^{(the connector)}

3.检查连接器是否损坏^{(Check your connector for damage)}，必要时更换。

4.如果电线损坏或断裂，请更换电线。^{(Replace the wire,)}

方法 2：断开所有电缆^{(Method 2: Disconnect All Cables)}

如果您面临 PC 未发布但有电源问题，则可能是由于连接到系统的电缆所致。因此^(Hence)，从计算机上断开所有电缆（电源线除外）：

• VGA 线：^{(VGA cable:)}它将显示器或显示器的VGA端口连接到您的计算机。
• DVI 电缆：^{(DVI cable: )}它将显示器或显示器的DVI端口连接到您的 PC。
• HDMI 线：^{(HDMI cable:)}它将显示器或显示器的HDMI端口连接到您的桌面。^(HDMI)
• PS/2 cable:PS/2端口上的键盘和鼠标。
• 扬声器和 USB 电缆^{(Speaker & USB cables)}。
• 以太网电缆：^{(Ethernet cable:)}这将断开网络连接并刷新它。

等待^(Wait)一段时间，然后重新连接它们。确保在打开 PC 时听到典型的哔声。^{(typical beep sound)}

另请阅读：^{(Also Read:)} 修复由于硬件问题导致的 Windows 冻结或重新启动^{(Fix Windows freezing or rebooting due to Hardware problems)}

方法 3：移除外部设备^{(Method 3: Remove External Devices)}

如果您有任何DVD^(DVDs)、CD^(CDs)或USB设备连接到您的系统，那么断开它们可能会修复 PC 不会在您的 Windows 10 台式机/笔记本电脑上发布问题。如本方法中所述，小心移除外部设备以避免任何数据丢失。

1. 在任务栏中找到安全^{( Taskbar)}删除硬件并弹出媒体^{(Safely Remove Hardware and Eject Media )}图标，如图所示。

2. 右键单击​​图标^{(icon )}并选择Eject <name of the device>。在这里，我们将删除名为Cruzer Blade的^{(Cruzer Blade)}USB 设备^{(USB device)}。

3. 同样，从系统中安全移除所有^{(remove all)} 外部设备^{(external devices )}

4. 最后，重新启动您的 PC^{(reboot your PC)}并检查问题是否已解决。

方法四：移除新添加的硬件设备^{(Method 4: Remove Newly Added Hardware Devices)}

如果您最近添加了新的外部或内部硬件和/或外围设备，那么新硬件可能与您的计算机不兼容。因此，请尝试断开这些连接并检查 PC 不会发布问题是否已解决。

另请阅读：^{(Also Read:)} 运行硬件和设备疑难解答以解决问题^{(Run Hardware and Devices Troubleshooter to fix issues)}

方法五：断开所有扩展卡^{(Method 5: Disconnect All Expansion Cards)}

扩展卡^{(expansion card)}也是一种适配卡或附属卡，用于^{(used to add functions)}通过扩展总线为系统增加功能。其中包括声卡、显卡、网卡等。所有这些扩展卡都用于改进其特定功能的功能。例如，额外的显卡用于提高游戏和电影的视频质量。

但是，这些扩展卡可能会在您的Windows计算机中引发不可见的问题，并可能导致 PC 无法发布问题。因此^(Hence)，断开所有扩展卡与系统的连接并检查 PC 未发布但电源问题是否已解决。

方法 6：清洁风扇并冷却您的 PC^{(Method 6: Clean Fans & Cool Your PC )}

如果您在高温下继续使用，系统的使用寿命将会缩短。持续过热会磨损内部组件并导致损坏。例如，当系统加热到最高温度时，风扇开始以最高 RPM 旋转以冷却系统。但是，如果系统无法冷却到所需的水平，那么GPU将产生更多热量，从而导致热节流^{(Thermal Throttling)(Thermal Throttling)}。因此，扩展卡的性能会受到影响并可能会被烧毁。因此^(Hence)，为避免 PC 未发布但在您的 Windows 10 计算机上出现电源问题

1.当系统过热或连续使用期间，让系统闲置一段时间。^{(Leave the system idle for some time)}

2.更换冷却系统^{(Replace the cooling system)}，如果您的系统有损坏的气流电缆和灰尘堆积。

另请阅读：^{(Also Read:)} 如何在 Windows 10 中检查 CPU 温度^{(How to Check CPU Temperature in Windows 10)}

方法 7：保持清洁和通风良好的环境^{(Method 7: Maintain Clean & Well-Ventilated Ambience)}

不干净的环境也可能导致系统性能下降，因为灰尘堆积会阻碍计算机的通风。这会增加系统的温度，从而导致 PC 无法POST问题。

1. 如果您使用的是笔记本电脑，请清洁其通风口。^{(clean its vents.)}

2.确保^{(Ensure )}有足够的空间进行适当的通风^{(proper ventilation)}。

3.使用^{(Use a)} 压缩空气清洁器^{(compressed air cleaner)}仔细清洁系统中的通风口。

方法 8：重新连接 RAM 和 CPU^{(Method 8: Re-Connect RAM & CPU)}

如果您已经尝试了本文中的所有方法，请尝试从主板上断开CPU和RAM 。然后，将它们连接回原来的位置并检查计算机不会发布问题是否已解决。

1. 确保RAM^{(RAM is compatible)}与系统兼容。

2. 检查内存^(RAM)、电源^(PSU)或主板是否工作正常。^{(working well.)}

3.如果有任何相关问题，请联系专业维修中心。^{(Contact a professional repair center,)}

4.如果需要，更换^(Replace) 硬件。^(hardware)

受到推崇的：^{(Recommended:)}

• 如何删除 Windows 注册表中的损坏条目^{(How to Delete Broken Entries in Windows Registry)}
• 修复当前没有可用的电源选项^{(Fix There Are Currently No Power Options Available)}
• 修复 DISM 主机服务进程 CPU 使用率过高^{(Fix DISM Host Servicing Process High CPU Usage)}
• 如何修复 hkcmd 高 CPU 使用率^{(How to Fix hkcmd High CPU Usage)}

我们希望本指南对您有所帮助，并且您可以修复 PC 不会^{(fix PC won’t post)} 在 Windows 10 中发布问题^{(problem in Windows 10)}。让我们知道哪种方法适合您。此外，请在评论部分留下您的疑问/建议。

How to Fix PC Won’t POST

Sоmetimes, when you turn on your PC, it may fail to start up, and you may face PС won’t POST issυe before entering BIOS. The term POST refers to a set of procedures that will run every time you turn on your computer. Not only computers, but several instrumentѕ and medical devices аlso run POST when powered on. Thus, when your system does not pass POST, thеn the system is unable to boot up. So, today we will learn what is no POST in computer and how to fix PC won’t POST issuе. Let’s begin!

How to Fix PC Won’t POST Issue

Before discussing the methods to fix PC won’t POST issue, it is important to understand what it is and the reasons causing the same.

What is No POST in Computer? Why Does It Occur?

Whenever you turn on your computer, it undergoes a Power-On Self-Test abbreviated as POST. This test includes the following processes & functions:

• Ensures hardware functionalities of essential devices like keyboards, mice, and other input and output peripherals through several hardware analysis processes.
• Finds and analyses the size of main memory of the system.
• Identifies and organizes all bootable devices.
• Verifies CPU registers, BIOS code integrity, and a few essential components like DMA, timer, etc.
• Passes over control to additional extensions installed in your system, if any.

Note: You do not necessarily need any operating system to be installed on your computer to run POST.

This issue occurs due to several factors like:

• Hardware device failure
• Electrical failure
• Incompatibility issue between old and new hardware

You can read more on it from Intel webpage on Why won’t my computer turn on.

How to Identify PC Not Posting But Has Power Problem

You can identify PC won’t post issue through symptoms like flashing LEDs, beep sounds, POST error codes, beep codes, error messages, self-test messages, etc. For instance: you might only see a power light, and not hear anything. Or, at times, only cooling fans run, and PC doesn’t boot. Moreover, different audible beeps will help you analyze the issue as follows:

• Single short beep sound- No issue with the system or POST.
• Two short beep sounds- Error in your system or POST that will be displayed on the screen.
• No beep sound- Problem with the power supply or system board. It might also happen when the CPU or speaker is disconnected.
• Continuous or Repeating beep sound- Issues related to power supply, motherboard, RAM, or keyboard.
• Single long beep along with a single short beep sound- Problem in the motherboard.
• Single long beep along with two short beep sounds- Issue with the display adapter.
• Single long beep along with a three short beep sounds– Problem with Enhanced Graphics Adapter.
• Three long beep sounds- Issue related to 3270-keyboard card.

Follow the methods listed below to fix PC won’t post problem in Windows 10.

Method 1: Check Power Cable

First step is to ensure adequate power supply to rule out electrical failure problems. Old or damaged cables will interfere with the connection and will keep disconnecting from the device. Similarly, loosely tied connectors will lead to power interruptions and may cause PC won’t post issue.

1. Plug out the power cable and try connecting it to a different outlet.

2. Tightly hold the connector with the cable.

3. Check your connector for damage and replace it, if necessary.

4. Replace the wire, if it is damaged or broken.

Method 2: Disconnect All Cables

If you are facing PC not posting but has power issue, then it might be due to the cables connected to your system. Hence, disconnect all cables from the computer, except the power cable:

• VGA cable: It connects the VGA port of the monitor or display to your computer.
• DVI cable: This connects the DVI port of the monitor or display to your PC.
• HDMI cable: It connects the HDMI port of the monitor or display to your desktop.
• PS/2 cable: This cable connect keyboards and mouse on PS/2 ports of your system.
• Speaker & USB cables.
• Ethernet cable: This would disconnect the network connection and refresh it too.

Wait for some time and connect them back again. Ensure that you hear a typical beep sound while turning on the PC.

Also Read: Fix Windows freezing or rebooting due to Hardware problems

Method 3: Remove External Devices

If you have any DVDs, CDs, or USB devices connected to your system, then disconnecting them might fix PC won’t post issue on your Windows 10 desktop/laptop. Remove the external devices with care to avoid any data loss, as explained in this method.

1. Locate the Safely Remove Hardware and Eject Media icon in the Taskbar, as shown.

2. Right-click on the icon and select the Eject <name of the device>. Here, we are removing USB device named Cruzer Blade.

3. Likewise, remove all external devices safely from the system

4. Lastly, reboot your PC and check if the issue is fixed.

Method 4: Remove Newly Added Hardware Devices

If you have added a new external or internal hardware and/or peripheral devices recently, then its possible that the new hardware is not compatible with your computer. Therefore, try disconnecting these and check if the PC won’t post issue is resolved.

Also Read: Run Hardware and Devices Troubleshooter to fix issues

Method 5: Disconnect All Expansion Cards

An expansion card is also an adapter card or accessory card used to add functions to the system through the expansion bus. These include sound cards, graphics cards, network cards, etc. All these expansion cards are used to improve the functionalities of their specific functions. For example, additional graphics card is used to enhance the video quality of games & movies.

However, these expansion cards might trigger an invisible problem in your Windows computer and might cause PC won’t post issue. Hence, disconnect all the expansion cards from your system and check if PC not posting but has power issue is resolved.

Method 6: Clean Fans & Cool Your PC

The lifespan of your system will be reduced when you continue using it at high temperatures. Constant overheating will wear down internal components and lead to damage. For instance, when system is heated to the maximum temperature, the fans start spinning at the highest RPM to cool it down. But, if the system is not able to cool down to the required levels then, the GPU will produce more heat leading to Thermal Throttling. As a result, the performance of the expansion cards will be affected and may get fried. Hence, to avoid PC not posting but has power issue on your Windows 10 computer

1. Leave the system idle for some time when it is subjected to overheating or in between spells of continuous use.

2. Replace the cooling system, if your system has damaged air flow cables and dust build-up.

Also Read: How to Check CPU Temperature in Windows 10

Method 7: Maintain Clean & Well-Ventilated Ambience

Unclean surroundings might also contribute to the poor performance of your system since the accumulation of dust will block the ventilation of the computer. This will increase the temperature of the system, and thereby cause PC won’t POST issue.

1. If you are using a laptop, clean its vents.

2. Ensure enough space for proper ventilation.

3. Use a compressed air cleaner to clean the vents in your system carefully.

Method 8: Re-Connect RAM & CPU

If you have tried all the methods in this article, try disconnecting your CPU and RAM from the motherboard. Then, connect them back to their original place and check if the computer won’t post issue is resolved.

1. Make sure that RAM is compatible with the system.

2. Check if the RAM, PSU, or motherboard are working well.

3. Contact a professional repair center, if there are any associated issues.

4. Replace hardware, if needed.

Recommended:

• How to Delete Broken Entries in Windows Registry
• Fix There Are Currently No Power Options Available
• Fix DISM Host Servicing Process High CPU Usage
• How to Fix hkcmd High CPU Usage

We hope that this guide was helpful and you could fix PC won’t post problem in Windows 10. Let us know which method worked for you. Also, leave your queries/suggestions in the comments section.

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