有时，当您将显示器连接到Windows 10 PC 时，事情似乎有点不对劲。如果您的显示尺寸和分辨率不是应有的，这里有一些常见的原因和修复方法，您可以尝试。
在本文中，我们将主要关注与外接显示器相关的问题，但如果您在笔记本电脑或 Windows 10 平板电脑上遇到本机显示问题，请查看我们关于如何在 Windows 10 中调整屏幕分辨率的(adjust the screen resolution in Windows 10)文章.
最后，如果您尝试将 Windows 10 连接到HDTV，那就完全是另一回事了。幸运的是，我们有一篇文章可以帮助您解决使用 HDTV(fix resolutions issues when using an HDTV)作为显示器时的分辨率问题。
确定显示器(Your Display)的原始分辨率(Native Resolution)并切换(Switch)到它
首先，找出显示器的原始分辨率。这通常写在屏幕进入的盒子上，但您也可以使用Windows显示设置进行检查：
- 右键单击(Right-click)Windows桌面(Windows)并选择显示设置(Display Settings)。
- 在显示分辨率(Display resolution)下选择下拉菜单(drop-down menu)。
- 寻找推荐(Recommended)的分辨率，这是您的显示器的原始分辨率，应该由Windows自动选择。如果不是，您可以将其更改为正确的分辨率(correct resolution)。链接文章中的步骤应该可以解决大多数与分辨率相关的问题。
但是，有时Windows会检测到错误的本机分辨率。如果您的屏幕在其网站上的手册或官方规格中的原始分辨率与Windows中的推荐设置不同，请将其更改为制造商的建议。
仔细检查您的硬件
让显示器正常工作取决于三个组件：显卡、显示器电缆和显示器本身。
- 如果前两个组件不支持您屏幕的本机分辨率，那可能是您的问题。
- 一些较旧的显卡，尤其是旧笔记本电脑中的集成显卡，无法输出 4K 或 1440p 分辨率。特定电缆也是如此。单链路 DVI(Single-link DVI)限制为 1920×1200，双链路DVI最高为 2560×1600。
- HDMI线有不同的类别，显卡上的HDMI输出可能只支持特定的分辨率。(HDMI)例如，您需要一根 3 类HDMI电缆才能以 60Hz 运行 4K 显示器。
- 您的显卡需要至少支持 HDMI 1.3 才能处理 4K 60Hz 分辨率。
简而言之，检查您的 GPU 和电缆是否支持您想要的分辨率。
在某些情况下，您可以通过切换连接器来解决此问题。例如，如果您的显示器同时具有HDMI和DisplayPort输入，则在大多数情况下切换到DisplayPort将使您能够获得更高的分辨率和刷新率。
使困惑？查看DVI、HDMI 和 DisplayPort——你需要知道(DVI vs HDMI vs DisplayPort – What You Need to Know)的。
检查应用内设置
一些全屏应用程序和视频游戏可以控制和接管系统的分辨率。视频游戏默认的分辨率与您的显示器看起来清晰所需的分辨率不同是很常见的。如果您的游戏看起来模糊(looks blurry)或拉伸和扭曲，请检查其显示设置并确保将其设置为适合您屏幕的分辨率。
在某些情况下，当视频游戏更改您的分辨率时，它们不会在您关闭它们时将其更改回来。按照第一部分中的说明手动修复Windows显示分辨率。
安装(Install)、重新安装(Reinstall)或更新您的显示(Display) 驱动程序(Drivers)
如果您的 GPU 驱动程序出现问题，您可能无法为您的屏幕选择合适的分辨率。Windows 可以使用通用显示驱动程序，但这通常意味着低分辨率输出。
解决方案是：
- 前往您的GPU制造商的网站
- (Download)为您的卡 下载正确的驱动程序。
- 安装它并重新启动计算机。
- 在安装新的更新版本之前，您可能希望使用DDU等程序首先清理损坏的驱动程序。
如需完整指南，请参阅如何安装新显卡 - 从硬件到驱动程序(How to Install a New Graphics Card – From Hardware to Drivers)。
回滚驱动程序
如果您的问题是在最近的驱动程序更新后开始的，您可以返回到之前正常工作的版本。查看如何在 Windows 10 中回滚驱动程序(How To Roll Back A Driver In Windows 10)，了解有关如何恢复正常工作的旧显示驱动程序的详细说明。
设置正确的多显示模式
如果您连接了多台显示器，则一台或多台显示器可能无法显示正确的分辨率。故障可能出在Windows的显示模式上。
- 如果您的计算机设置为重复显示并且两个屏幕具有不同的原始分辨率，则一个屏幕将无法显示正确的图像质量。如果您正在做演示，最好选择观众将看到的显示器分辨率，并且您将不得不处理扭曲的图像。
- 解决方案可能是将模式更改为“扩展”。您可以独立设置每个屏幕的分辨率，以防Windows出错。
有关双显示器设置的更多详细信息，请查看如何在 Windows 中设置双显示器、(How to Setup Dual Monitors in Windows)未检测到第二台显示器时该怎么做(What To Do When Your Second Monitor Is Not Detected)以及修复 PC 上的空白或黑色显示器问题(Fix Blank or Black Monitor Problem on a PC)。
使用GPU 实用程序(GPU Utility)设置分辨率(Set Resolution)
虽然Windows为您提供了一种统一的方法来修复您的Windows显示分辨率，但主要的 GPU 制造商都有自己的实用程序，可让您控制桌面和应用程序的分辨率：
- 对于 Nvidia 用户，它被称为Nvidia 控制面板(Nvidia Control Panel)(Nvidia Control Panel)。
- 对于 AMD 用户，它被称为AMD Radeon Software。
- 对于英特尔(Intel)显卡用户，它被称为英特尔显卡指挥中心(Intel Graphics Command Center)(Intel Graphics Command Center)。
您可以通过右键单击桌面或在开始菜单中搜索来访问这些应用程序。它们每个的分辨率控件都不同，但在打开每个实用程序时它们通常位于前面和中间。
(Adjust DPI Scaling)如果东西太小，请(Too Small)调整 DPI 缩放
那么，如果您的屏幕设置为正确的分辨率，但文本、图标和其他屏幕元素太小，该怎么办？这在整体尺寸较小的高分辨率显示器上最为常见，例如 15 英寸 4K 笔记本电脑屏幕。
现代操作系统（如Windows ）将自动缩放屏幕元素，使其更易于在此类显示器上阅读。不过，如果您对Windows(Windows)的操作方式不满意，您可以覆盖该设置：
- 右键单击(Right-click)桌面并选择显示设置(Display Settings)。
- 滚动到Scale and layout。
- 在更改文本、应用程序和其他项目的大小下，(Change the size of text, apps and other items)选择您选择的比例。
通常，100% 是推荐的默认值，但请尝试每次递增，直到找到适合的值。请记住，如果您过多地推动缩放，某些应用程序将不再正确显示，因此最好保守一点。
通过所有这些修复，您的 Windows 显示现在应该看起来像您想要的那样。如果没有，请在此处发表评论，我们很乐意回复。
How to Fix Windows 10 Display Size and Resolution Issues
Sometimes when you connect a monitor to a Windows 10 PC, things јust seem a little off. If уour dіsplay size and resolution аren’t what they should be, here are а few commоn causes and fixes you can try.
In this article, we’ll be focusing mostly on issues related to external monitors, but if you’re having issues with the native display on your laptop or Windows 10 tablet, check out our article on how to adjust the screen resolution in Windows 10.
Lastly, if you’re trying to connect your Windows 10 to a HDTV, that’s a whole another story. Luckily, we have an article that will help you fix resolutions issues when using an HDTV as a monitor.
Determine the Native Resolution of Your Display and Switch to It
First, figure out the native resolution of your display. This is usually written on the box the screen came in, but you can also check it using Windows display settings:
- Right-click on the Windows desktop and select Display Settings.
- Under Display resolution select the drop-down menu.
- Look for the Recommended resolution, which is your display’s native resolution and should be auto-selected by Windows. If it isn’t, you can change it to the correct resolution. The steps in the linked article should solve most resolution-related problems.
Sometimes, however, Windows detects the wrong native resolution. If your screen’s native resolution as per its manual or official specs on its website is different from the recommended setting in Windows, change it to the manufacturer’s recommendation.
Double Check Your Hardware
Getting a display to work correctly depends on three components: the graphics card, the display cable, and the display itself.
- If the first two components don’t support your screen’s native resolution, that could be your issue.
- Some older graphics cards, especially integrated ones in older laptops, can’t output 4K or 1440p resolutions. The same is true of specific cables. Single-link DVI is limited to 1920×1200, and dual-link DVI tops out at 2560×1600.
- HDMI cables come in different categories, and the HDMI output on your graphics card may only support specific resolutions. For example, you need a category 3 HDMI cable to run a 4K display at 60Hz.
- Your graphics card needs to support at least HDMI 1.3 to handle a 4K 60Hz resolution.
In short, check that both your GPU and cable support the resolution you want.
In some cases, you can fix this by switching connectors. For example, if your display has both an HDMI and DisplayPort input, then switching to DisplayPort will give you access to higher resolutions and refresh rates in most cases.
Confused? Check out DVI vs HDMI vs DisplayPort – What You Need to Know.
Check In-App Settings
Some full-screen apps and video games can control and take over your system’s resolution. It’s common for video games to default to a resolution that’s different from what your monitor requires to look sharp. If your game looks blurry or stretched and distorted, check its display settings and make sure you set it to the right resolution for your screen.
In some cases, when video games change your resolution, they don’t change it back when you close them. Follow the instructions in the first section to fix your Windows display resolution manually.
Install, Reinstall, or Update Your Display Drivers
You may not be able to select the proper resolution for your screen if something’s wrong with your GPU’s drivers. Windows can fall back on a generic display driver, but that usually means low resolution output.
The solution is to :
- Head on over to your GPU maker’s website
- Download the correct driver for your card.
- Install it and restart the computer.
- You may want to use a program such as DDU to first clean up the broken driver before installing a fresh, updated version.
For a complete guide, head over to How to Install a New Graphics Card – From Hardware to Drivers.
Roll Back Drivers
If your problems started after a recent driver update, you could go back to the previous version that worked properly. Check out How To Roll Back A Driver In Windows 10 for detailed instructions on how to get back to a working, older display driver.
Set the Correct Multi-Display Mode
If you have multiple displays connected, one or more displays may not show the correct resolution. The fault may lie with the display mode on Windows.
- If your computer is set to duplicate displays and the two screens have different native resolutions, then one screen will not show the correct image quality. If you’re doing a presentation, it’s best to pick the display’s resolution that your audience will see, and you’ll have to make do with the distorted image.
- The solution may be to change the mode to “extended.” You can set each screen’s resolution independently in case Windows gets it wrong.
For more details on dual-monitor setups, check out How to Setup Dual Monitors in Windows, What To Do When Your Second Monitor Is Not Detected, and Fix Blank or Black Monitor Problem on a PC.
Use Your GPU Utility To Set Resolution
While Windows offers you a uniform way to fix your Windows display resolution, major GPU makers have their own utility that lets you control your desktop and application resolutions:
You can access these applications by right-clicking on the desktop or searching for them in the start menu. Resolution controls are different for each of them, but they are usually front and center when opening each utility.
Adjust DPI Scaling if Things Are Too Small
So what if your screen is set to the correct resolution, but text, icons, and other screen elements are too small? This is most common on high-resolution displays that are small in overall size, such as a 15” 4K laptop screen.
Modern operating systems such as Windows will automatically scale screen elements to make them easier to read on such displays. Still, if you’re not happy with how Windows is doing it, you can override the setting:
- Right-click on the desktop and select Display Settings.
- Scroll to Scale and layout.
- Under Change the size of text, apps and other items choose the scale of your choice.
Usually, 100% is the recommended default, but try each incremental increase until you find one you’re comfortable with. Keep in mind that some applications will no longer display correctly if you push scaling too much, so it’s better to be conservative.
With all of these fixes, your Windows display should now look the way you want it to. If not, post a comment here and we are pretty good about responding.
