您想要为您的Microsoft Windows笔记本电脑或台式机添加第二个显示器，但您在显示器上看到的只是“输入信号超出(Input Signal Out)范围”错误。
这是最常见的错误之一，经常在许多技术论坛上报告。使用旧显示器时尤其常见。
在本文中，您将了解此错误的含义以及可快速解决该错误的修复方法。
Windows中的“输入信号超出(Input Signal Out)范围”错误是什么？
许多年前，计算机显示器（通常是VGA）不是很灵活。您需要购买分辨率和刷新率适合您的视频卡的显示器。
视频(Video)卡更灵活一些，因为您可以将它们调整为不同的分辨率和刷新率。如果来自视频卡的信号不正确，显示器会显示“输入信号超出范围”。
在某些情况下，显示器还会告诉您将视频卡输出设置为什么分辨率和刷新率，这使得解决此问题变得更加简单。
较新的显示器（如LCD屏幕）不再有此问题，因为它们会通过扫描所有可能的分辨率和刷新率来自动修复输入信号问题，直到发现与视频卡的视频信号相匹配。
注意：在开始进行故障排除之前，请务必检查从计算机到显示器的HDMI电缆，确保其连接正确。(HDMI)如果不是，您的问题可能根本就没有信号。
1. 将刷新率设置为 60 Hz
大多数桌面显示器的标准刷新率为 60 Hz。但是，如果您通常使用 75 Hz 到 240 Hz 范围内的高刷新率显示器，则您当前的视频卡刷新率设置可能不适合这款较旧的显示器。
为使一切正常运行，请将显卡设置更改为标准的 60 Hz 设置。如果您使用的是台式计算机并且这是您唯一的显示器，请将计算机重新启动到安全模式(restart your computer into safe mode)（通常在启动时使用 F8 键），以便您可以按照以下步骤操作。这将设置最低分辨率和最低刷新率，以便您可以在监视器上看到足够多的内容以应用新的显示设置。然后您将重新启动回到正常模式。
注意：如果显示器上的消息建议使用不同的刷新率，请将其设置为该刷新率而不是 60 Hz。
- 选择Windows 开始(Windows Start)菜单，键入“设置”并打开Windows 设置(Windows Settings)应用程序。在此应用程序中，从左侧菜单中选择系统，然后在右侧窗格中
选择显示。(Display)
- 向下滚动(Scroll)右窗格并通过选择高级(Advanced)显示访问高级选项。
- 在列表中找到您连接显示器的视频卡（如果有多个），然后选择Display x的(Display x)Display adapter properties （x 将是该适配器输出的显示编号）。
- 在适配器属性弹出窗口中，选择监视器(Monitor)选项卡。然后，使用“监视器设置”部分中的“(Monitor Settings)屏幕(Screen)刷新率”下拉菜单将该视频卡调整为 60赫兹(Hertz)。
选择确定(Select OK)以保留这些设置。最后，重新启动您的Windows系统并确认您的显示器现在工作正常并且没有显示“输入信号超出范围”错误。
上述过程适用于Windows 10和 11 操作系统。但是，如果您仍在使用Windows 7或更早版本，则需要改为执行此过程：
- 打开控制面板
- 导航(Navigate)到外观(Appearance)和个性化> Display > Screen Resolution
- 选择 Advanced Settings(Select Advanced Settings)，切换到Monitor选项卡，并将刷新率更改为 60 Hz
2.修复显卡(Graphics) 驱动分辨率设置(Driver Resolution Settings)
如果调整刷新率不能解决超出范围的错误，下一个要调整的最佳设置是您的图形驱动程序分辨率。如果您的视频卡分辨率设置高于显示器能够达到的最高分辨率，您可能会看到“输入信号超出范围”错误。
在更改分辨率设置之前，您需要先确定显示器的分辨率。为此，请访问显示器制造商的网站并查找显示器的型号。您应该能够找到您的显示器是否真的支持您想要使用的分辨率。查看显示器的“最大分辨率”等级。
接下来，按照以下步骤将显卡分辨率设置为不高于最大显示器分辨率。
- 选择Windows 开始(Windows Start)菜单，键入“设置”并打开Windows 设置(Windows Settings)应用程序。在此应用程序中，从左侧菜单中选择系统，然后在右侧窗格中
选择显示。(Display)
- 如果您使用多台显示器，请选择出现问题的显示器。要识别它，请选择识别(Identify)按钮。您会在显示器上看到一个正常工作的数字。选择工作不正常的显示器的编号。
- 向下滚动(Scroll)右窗格并找到“显示分辨率(Display Resolution)”部分。使用右侧的下拉菜单选择您知道显示器品牌和型号能够支持的最大分辨率设置。
如果您使用两台显示器，您可能会看到另一台显示器闪烁，并且可能会出现一条消息，询问您是否要保留当前的分辨率设置。如果另一台显示器现在工作正常，则选择是(Yes)。否则(Otherwise)，选择“否”并尝试较低的分辨率设置，直到找到一个可行的设置。
如果一切都失败了
如果你已经走到这一步并且仍然出现超出范围的错误，你可能需要采取稍微更极端的措施。接下来要尝试的是重新启动、重置或卸载并重新安装图形驱动程序(restart, reset, or uninstall and reinstall your graphics drivers)，检查每一步是否已解决问题。或者，如果您最近安装了Windows更新或升级了图形驱动程序，则值得将该驱动程序回滚到以前的版本(roll back that driver to a previous version)。
如果您在尝试的每台显示器上都遇到错误并且没有任何效果，您可能需要购买并安装新的显卡和驱动程序(purchase and install a new graphics card and driver)。
最后，如果您最近购买了此显示器并且它仍在保修期内，请考虑联系制造商或您购买它的商店，并要求更换。如果这是一台旧显示器，那么您可能会考虑摆脱它并购买一台新显示器(purchasing a new monitor)作为替代品。您不太可能在较新的显示器上看到超出范围的错误。
How to Fix “Input Signal Out of Range” Error in Windows
You want to add a seсоnd display to your Microsoft Windows laptop or desktop, but all you sеe on the monitor is the “Input Signal Out of Range” error.
This is one of the most common errors, frequently reported on many tech forums. It’s especially common when using old monitors.
In this article, you’ll learn what this error means and the fixes that will resolve it quickly.
What Is the “Input Signal Out of Range” Error in Windows?
Many years ago, computer monitors (typically VGA) weren’t very flexible. You needed to purchase a monitor that was the correct resolution and refresh rate for your video card.
Video cards were a little more flexible, since you could adjust them to different resolutions and refresh rates. If the signal from your video card wasn’t correct, the monitor would display “Input Signal Out of Range”.
In some cases the monitor would also tell you what resolution and refresh rate to set your video card output to, which makes troubleshooting this issue much simpler.
Newer monitors (like LCD screens) no longer have this issue because they will automatically fix input signal issues by scanning all possible resolutions and refresh rates until discovering the match with your video card’s video signal.
Note: Before you get started troubleshooting, make sure to check the HDMI cable from your computer to the monitor to ensure it’s properly connected. If it isn’t, your problem may simply be no signal at all.
1. Set the Refresh Rate to 60 Hz
The standard refresh rate for most desktop monitors is 60 Hz. However, if you normally use high refresh rate monitors that range from 75 Hz to 240 Hz, it’s possible that your current video card refresh rate setting is incorrect for this older monitor.
To get things working right, change your graphics card settings to the standard 60 Hz setting. If you’re using a desktop computer and this is your only monitor, restart your computer into safe mode (usually using the F8 key on startup) so you can follow the steps below. This will set the lowest resolution and lowest refresh rate so that you can see enough on the monitor to apply new display settings. You will then restart afterwards back into normal mode.
Note: If the message on your monitor is recommending a different refresh rate, set it to that rather than 60 Hz.
- Select the Windows Start menu, type “Settings” and open the Windows Settings app. In this app, select System from the left menu and then select Display in the right pane.
- Scroll down the right pane and access advanced options by selecting Advanced display.
- Find the video card in the list (if you have more than one) that you’ve connected the monitor to and select Display adapter properties for Display x (x will be the display number for that adapter output).
- In the adapter properties pop-up window, select the Monitor tab. Then, use the Screen refresh rate dropdown in the Monitor Settings section to adjust that video card to 60 Hertz.
Select OK to retain those settings. Finally, reboot your Windows system and confirm that your monitor is now working correctly and doesn’t display the “Input Signal Out of Range” error.
The process above works for Windows 10 and 11 operating systems. However if you’re still using Windows 7 or older, you’ll need to follow this process instead:
- Open the Control Panel
- Navigate to Appearance and personalization > Display > Screen Resolution
- Select Advanced Settings, switch to the Monitor tab, and change the refresh rate to 60 Hz
2. Fix the Graphics Driver Resolution Settings
If adjusting the refresh rate didn’t resolve the out of range error, the next best setting to adjust is your graphics driver resolution. If your video card resolution is set higher than the highest resolution your monitor is capable of, you may see the “Input Signal Out of Range” error.
You will need to determine what resolution your monitor is capable of first before you change resolution settings. To do this visit the display manufacturer’s website and look up the model number of your monitor. You should be able to find if your monitor actually supports resolutions that you want to use. Look for the monitor’s “maximum resolution” rating.
Next, follow the steps below to set the graphics card resolution no higher than that maximum monitor resolution.
- Select the Windows Start menu, type “Settings” and open the Windows Settings app. In this app, select System from the left menu and then select Display in the right pane.
- If you’re using multiple monitors, select the monitor that’s giving you issues. To identify it, select the Identify button. You will see a number on the monitor that’s working correctly. Select the number for the monitor that isn’t working correctly.
- Scroll down the right pane and find the Display Resolution section. Use the dropdown on the right to select the maximum resolution setting that you know the brand and model of your monitor is capable of.
If you’re using two monitors, you may see the other monitor flicker and possibly a message asking if you want to keep the current resolution settings. If the other monitor is now working correctly, then select Yes. Otherwise, select No and try lower resolution settings until you find one that works.
If All Else Fails
If you’ve gotten this far and are still getting the out of range error, you may have to take slightly more extreme measures. The next thing to try is restart, reset, or uninstall and reinstall your graphics drivers, checking at each step whether it has resolved the issue. Or, if you’ve recently installed a Windows update or upgraded your graphics driver, it could be worthwhile to roll back that driver to a previous version.
If you’re getting the error on every monitor you try and nothing works, you may want to purchase and install a new graphics card and driver.
Finally, if you recently purchased this monitor and it’s still under warranty, consider contacting the manufacturer, or the store where you purchased it, and asking for a replacement. If this is an older monitor, then you might consider just getting rid of it and purchasing a new monitor as a replacement. You are far less likely to see the out of range error on a newer monitor.
