高压交流电通过称为^{(Alternating Current)}电源单元或 PSU^{(Power Supply Unit or PSU)}的^(Current)内部IT 硬件^{(IT hardware)}组件转换为直流电。不幸的是，与硬件或磁盘驱动器^{(hardware or disk drives)}一样，PSU也经常出现故障，主要是由于电压波动。因此，如果您想知道如何判断PSU是否出现故障，本指南适合您。阅读下文以了解PC 电源^{(PC power supply)}问题、如何测试电源^{(power supply)}单元以及相同的解决方案。

如何测试电源单元：它是死的还是活的？^{(How to Test Power Supply Unit: Is It Dead or Alive?)}

PSU 失败的迹象^{(Signs of Failing PSU)}

当您在Windows PC中遇到以下问题时，表明电源单元^{(Power Supply Unit)}出现故障。此后^(Thereafter)，运行测试以确认PSU是否出现故障并需要维修/更换。

• PC 根本无法启动^{(PC won’t boot at all )}– 当PSU出现问题时，您的 PC 将无法正常启动。它将无法启动，PC 通常被称为死机。在此处阅读我们关于修复 PC^{(Fix PC Turns)}开启但无显示^{(No Display)}的指南。
• 电脑随机重启或自动关机^{(PC restarts randomly or shuts down automatically )}- 如果在启动过程中发生这种情况，则表明PSU 故障^{(PSU failure)}，因为它无法满足足够的电源要求。
• 蓝屏死机^{(Blue Screen of Death )}– 当您的 PC 出现蓝屏中断^{(screen interruption)}时，它可能没有处于最佳状态的可能性更高。在此处阅读修复 Windows 10^{(Fix Windows 10)} 蓝屏错误^{(Blue Screen Error)}。
• 死机^{(Freezing )}——电脑^{(PC screen)}无故死机，没有蓝屏或黑屏，可能是电源^{(power supply)}有问题。
• Lag and Stuttering –当存在过时的驱动程序、损坏的文件、错误的RAM或未优化的游戏设置以及电源单元问题时，也会发生^{(Power Supply Unit)}滞后^(Lag)和口吃。
• 屏幕^{(Screen Glitches )}故障 - 所有屏幕故障，如奇怪的线条、不同的颜色图案、不良的图形设置、颜色不准确，都表明^{(color inaccuracy)}PSU的健康状况不佳。
• 过热^{(Overheating ­)}–过度过热也可能是^{(Excessive overheating)}电源装置^{(Power Supply Unit)}性能不佳的标志。随着时间的推移，这可能会损坏内部组件并降低笔记本电脑的性能。
• 冒烟或有烧焦味^{(Smoke or burning smell )}- 如果设备完全烧毁，则可能会释放烟雾并伴有烧焦味^{(burning smell)}。在这种情况下，您必须立即进行更换，并且在更换PSU之前不要使用系统。

注意：^(Note:)您可以直接从 Microsoft 购买 Surface PSU^{(buy Surface PSU from Microsoft directly)}。

测试 PSU 前应遵循的指示^{(Pointers to be Followed Before Testing PSU)}

• 确保电源^{(power supply)}没有意外断开/关闭。
• 确保电源线^{(power cable )}既没有损坏也没有断裂。
• 所有的内部连接，^{(internal connections, )}尤其是外围设备的电源连接，都做得很完美。
• 断开除引导驱动器和显卡^{(boot drive and graphics card)}之外的外围^(external) 设备和硬件^{(peripherals & hardware )}。
• 测试前务必确保扩展卡^{(expansion cards)}正确插入插槽。

注意：^(Note:) 在处理主板和显卡连接器时^{(motherboard & graphics card connectors)}要格外^(Pay)小心。

方法一：通过软件监控工具
^{(Method 1: Through Software Monitoring Tools )}

如果您认为电压供应^{(voltage supply)}有问题，那么您应该使用软件监控^{(software monitoring)}工具来确定它。例如，您可以使用Open Hardware Monitor或HWMonitor来显示系统中所有组件的电压。值的下降和峰值，因为这些值将帮助您确定PSU是否出现故障。您还可以利用这些工具提供的附加功能。按照^(Follow)给定的步骤使用Open Hardware Monitor测试电源^{(Power Supply)}：

1. 转到Open Hardware Monitor 主页^(homepage)并单击下载 Open Hardware Monitor ^{(Download Open Hardware Monitor)} 0.9.6，如下所示。

2. 单击立即下载^{(Download Now)}以下载该程序。

3. 解压下载的 zip 文件^{(Downloaded zip file)}并双击打开解压的文件夹。

4. 双击OpenHardwareMonitor应用程序以运行它。

5. 在这里，您可以看到所有传感器^{(all sensors)}的电压值^{(Voltage values)}。

另请阅读：^{(Also Read:)}如何在Windows 10上使用^{(Windows 10)}性能监视器^{(Performance Monitor)}（详细指南^{(Detailed GUIDE)}）

方法二：通过交换测试^{(Method 2: Through Swap Testing )}

要分析PC 电源^{(PC power supply)}问题和解决方案，您可以按照称为交换^(Swap)测试的简单程序进行操作，如下所示：

1.断开^(Disconnect)现有的电源单元^{(Power Supply Unit)}，但不要将其从机箱上拆下。

2. 现在，在您的 PC 周围放置一个备用PSU ，并将主板、GPU 等所有组件^{(connect all the components)}与备用 PSU^{(with the spare PSU)}连接。

3.将备用 PSU 连接到电源插座^{(Connect spare PSU to a power socket)}并检查您的 PC 是否正常工作。

4A。如果您的 PC 在备用PSU上运行良好，则表明原来的电源单元^{(Power Supply Unit)}有问题。然后，replace/repair PSU。

4B。如果您的计算机仍然存在问题，请到授权服务中心^{(authorized service center)}进行检查。

另请阅读：^{(Also Read:)} 修复^(Fix)当前没有可用的电源选项^{(Are Currently No Power Options Available)}

方法三：通过回形针测试^{(Method 3: Through Paper Clip Testing)}

这种方法很简单，你只需要一个回形针。此操作背后的原理是，当您打开 PC 时，主板会向电源发送信号并触发^{(power supply and triggers)}它打开。使用回形针，我们正在模拟主板信号，以检查问题出在 PC 上还是PSU上。因此，如果系统无法正常启动，您可以判断PSU是否出现故障。以下是使用回形针测试来测试^{(paper clip testing)}电源装置或 PSU^{(Power Supply Unit or PSU)}的方法：

1.断开^{(Disconnect the power supply)}电脑所有部件和电源插座^{(power socket)}的电源。

注意：^{(Note: )}您可以让机箱风扇^{(case fan)}保持连接状态。

2.关闭^{(Turn off the)} 安装在电源单元背面的^{(Power Supply Unit)}开关^(switch)。

3. 现在，取一个回形针^{(paper clip)}，把它弯成 U 形^{(U shape)}，如下图所示。

4. 找到电源单元^{(Power Supply Unit)}的24 针主板连接器^{(24-pin motherboard connector)}。您会注意到唯一的绿线^{(green wire )}，如下图所示。

5. 现在，使用回形针的一端连接到通向绿线^{(green wire )}的引脚，并使用回形针的另一端连接到通向任何一根黑线^{(black wires)}的引脚。

6.将^{(Plug in the)} 电源^{(Power Supply )}插回设备并打开 PSU 开关。^{(turn on the PSU switch.)}

7A。如果电源风扇和机箱风扇都旋转^{(power supply fan and case fan spin)}，则电源单元^{(Power Supply Unit)}没有问题。

7B。如果PSU中的风扇和机箱风扇静止不动^{(case fan stand)}，则问题与电源单元^{(Power Supply Unit)}有关。在这种情况下，您必须更换PSU。

推荐的：^{(Recommended:)}

• 如何在Windows 11中创建本地帐户^{(Windows 11)}
• ^{(Best External Hard Drive)}适合 PC 游戏的最佳外置硬盘
• 什么是瑞昱读卡器？
• 多少 RAM 才足够

我们希望本指南能帮助您了解PSU 的故障迹象^{(failing signs of PSU)}以及如何测试电源^{(how to test power supply)}。如果您对本文有任何疑问/建议，请随时将它们放在下面的评论部分。

How to Test Power Supply

The high vоltage Alternating Current is converted into Dіrect Current by an internal IT hardwаre component called Power Supply Unit or PSU. Unfortυnately, like the hardware or disk drives, PSU аlso fails quite often, majorly dυe to fluctuations іn voltage. So, if you are wondering how to tell if PSU is failing or not, this guide is for you. Read below to learn about PC power supрly problems, how to test power supply units, аnd solutions for the same.

How to Test Power Supply Unit: Is It Dead or Alive?

Signs of Failing PSU

When you face the following issues in your Windows PC, it indicates the failure of Power Supply Unit. Thereafter, run tests to confirm if PSU is failing and needs repair/replacement.

• PC won’t boot at all – When there is a problem with PSU, your PC will not boot normally. It will fail to start and the PC is often termed as a dead computer. Read our guide on Fix PC Turns On But No Display here.
• PC restarts randomly or shuts down automatically – If this happens during start-up, it indicates PSU failure as it cannot meet the adequate power requirements.
• Blue Screen of Death – When you face a blue screen interruption in your PC, there are higher chances that it might not be in optimum condition. Read Fix Windows 10 Blue Screen Error here.
• Freezing – When the PC screen freezes for no reason, without any blue screen or black screen, then there might be problems in the power supply.
• Lag and Stuttering ­– Lag and stuttering also occur when there are outdated drivers, corrupt files, faulty RAM, or non-optimized game settings along with Power Supply Unit issues.
• Screen Glitches ­- All screen glitches like weird lines, different color patterns, poor graphics setting, color inaccuracy, point to the poor health of the PSU.
• Overheating ­– Excessive overheating might also be a sign of poor performance of the Power Supply Unit. This might damage the internal components and slow down the performance of the laptop over time.
• Smoke or burning smell – If the unit completely burns down, then it might release smoke accompanied by a burning smell. In this case, you must go for replacement immediately, and you should not use the system until PSU is replaced.

Note: You can buy Surface PSU from Microsoft directly.

Pointers to be Followed Before Testing PSU

• Ensure that the power supply has not been disconnected/ turned off accidentally.
• Make sure the power cable is neither damaged nor broken.
• All the internal connections, especially power connections to the peripherals, are done perfectly.
• Disconnect the external peripherals & hardware except for the boot drive and graphics card.
• Always ensure that the expansion cards are correctly seated in their socket before testing.

Note: Pay additional care while dealing with motherboard & graphics card connectors.

Method 1: Through Software Monitoring Tools

If you believe there is a problem with the voltage supply, then you should use software monitoring tools to determine it. For example, you can use Open Hardware Monitor or HWMonitor to show voltages for all the components in the system. <aintain a record of the drop and peak in values, as these values will help you determine if the PSU is failing or not. You can also make use of the additional features that these tools provide. Follow given steps to use Open Hardware Monitor to test Power Supply:

1. Go to the Open Hardware Monitor homepage and click on Download Open Hardware Monitor 0.9.6 as highlighted below.

2. Click on Download Now to download this program.

3. Extract the Downloaded zip file and open the extracted folder by double-clicking on it.

4. Double-click on the OpenHardwareMonitor application to run it.

5. Here, you can see the Voltage values for all sensors.

Also Read: How to Use Performance Monitor on Windows 10 (Detailed GUIDE)

Method 2: Through Swap Testing

To analyze PC power supply problems and solutions, you can follow a simple procedure called, Swap testing, as follows:

1. Disconnect the existing Power Supply Unit, but do not demount it from the case.

2. Now, place a spare PSU somewhere around your PC and connect all the components like the motherboard, GPU, etc with the spare PSU.

3. Connect spare PSU to a power socket and check if your PC is working correctly.

4A. If your PC functions well with the spare PSU, it indicates a problem with the original Power Supply Unit. Then, replace/repair PSU.

4B. If the problem still exists with your computer, then get it checked from an authorized service center.

Also Read: Fix There Are Currently No Power Options Available

Method 3: Through Paper Clip Testing

This method is straightforward, and all you need is a paperclip. The principle behind this operation is, when you turn on the PC, the motherboard sends a signal to the power supply and triggers it to turn On. Using the paperclip, we are emulating the motherboard signal to check if the problem is with the PC or with the PSU. So, if the system cannot be booted normally you can tell if PSU is failing or not. Here’s how to test Power Supply Unit or PSU using paper clip testing:

1. Disconnect the power supply from all the components of the PC and the power socket.

Note: You can leave the case fan connected.

2. Turn off the switch mounted at the back of the Power Supply Unit.

3. Now, take a paper clip and bend it into U shape, as shown below.

4. Locate the 24-pin motherboard connector of the Power Supply Unit. You will notice the only green wire as shown in the pic below.

5. Now, use one end of the paperclip to connect to the pin that leads to the green wire and use the other end of the paperclip to connect with the pin that leads to any one of the black wires.

6. Plug in the Power Supply back to the unit and turn on the PSU switch.

7A. If both the power supply fan and case fan spin, then there is no issue with the Power Supply Unit.

7B. If the fan in the PSU and the case fan stand still, then the issue is concerned with the Power Supply Unit. In this case, you have to replace the PSU.

Recommended:

• How to Create a Local Account in Windows 11
• Best External Hard Drive for PC Gaming
• What is Realtek Card Reader?
• How Much RAM Is Enough

We hope that this guide helped you learn failing signs of PSU and how to test power supply. If you have any queries/suggestions regarding this article, then feel free to drop them in the comments section below.

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