我最近在几台Windows 7机器上看到的一个问题是显示屏仅在 15 分钟后关闭，即使我将关闭显示^{(Turn off the Display)}选项设置为从不^(Never)。诡异的！

您可能正在阅读此内容，因为您已尝试将电源计划^{(power plan)}设置更改为“从不^(Never)”，但您的显示器仍然关闭！这可能非常令人沮丧，并且通常发生在新安装的Windows 7中，尽管我已经看到它也发生在旧安装中。

在本文中，我将介绍解决此问题的不同方法。请注意，如果您的计算机已打开，但屏幕显示No Signal 或 No Input^{(No Signal or No Input)}，您应该阅读我关于修复空白或黑屏的帖子。现在让我们来看看可能的解决方案。

电源选项 - 控制面板

首先，我们需要确保在Power Options中的所有设置都正确。单击^(Click)开始并输入^{(Start and type)}电源选项或转到控制面板^{(Control Panel)}（图标视图），然后从那里打开电源^(Power) 选项。^(Options)

单击开始^(Start)，然后单击控制面板^{(Control Panel)}，然后单击硬件和声音^{(Hardware and Sound)}，然后单击电源选项^{(Power Options)}。

单击当前所选计划旁边的更改计划设置链接。^{( Change plan settings)}就我而言，选择了高性能^{(High Performance)}计划，因此我将单击它旁边的链接。

首先，确保将计算机置于睡眠状态^{(Put the computer to sleep)}设置为从不^(Never)。接下来，将关闭显示^{( Turn off the display)}设置更改为您想要的任何值。如果您不想，则不必将其设置为“从不^(Never)”。在此之后，单击更改高级电源设置^{(Change advanced power settings)}链接。

展开硬盘^{( Hard disk)}，然后展开后关闭硬盘^{( Turn off hard disk after)}。减少该值，直到它变为Never。单击确定，然后单击编辑计划设置^{( Edit Plan Settings)}页面上的保存更改。^{(Save Changes)}

屏幕保护程序 - 控制面板

您要检查的第二个设置是屏幕保护程序^{(screen saver)}。转到控制面板^{(Control Panel)}，单击个性化^{(Personalization)}，然后单击右下角的屏幕保护程序^{(Screen Saver)}。

确保^(Make)设置设置为None。有时，如果屏幕保护程序^{(screen saver)}设置为空白^(Blank)且等待时间^{(wait time)}为 15 分钟，您的屏幕看起来就像已关闭。

BIOS、显卡、显示器

上述两种方法是显示器在设定^{(set amount)}时间后关闭的最常见原因，但也可能有其他可能的原因。

BIOS – 在某些计算机上，BIOS可以具有确定^(BIOS)计算机睡眠^{(computer sleeps)}方式的省电设置。这些称为睡眠模式（S1、S2、S3、S4 和 S5）。在某些计算机上，您会看到一个名为Deep Sleep Control的选项。您可能需要禁用此功能以使计算机更快地唤醒。

显卡^{(Graphics Card)}– 如果您安装了高端显卡，请确保您安装了最新的驱动程序和管理软件^{(driver and management software)}。如果您通过设置，您可能会找到一个选项，使您的显卡进入低功耗模式或^{(power mode or something)}类似的模式。

显示器^(Monitor)–最后^(Lastly)，一些显示器本身具有省电^{(power saving)}功能。通常，如果没有检测到任何输入（HDMI、VGA、DVI等），显示器应该进入省电模式，但有时它会意外发生。^{(power saving)}

您必须按下显示器上的按钮才能访问显示器设置。这些就是我能想到的所有不应该关闭显示器的原因。如果您有任何其他问题或解决方案，请随时发表评论。享受！

Does Your Windows Computer Display Turn Off Every 15 Minutes?

A rеcent issue I’ve seen on a few Windows 7 machines haѕ been the display turning оff after only 15 minutes, even thoυgh I set the Turn off the Display option to Never. Weird!

You’re probably reading this because you’ve tried changing the power plan settings to Never for everything and your monitor still turns off! This can be very frustrating and usually occurs with new installs of Windows 7, though I’ve seen it happen on older installs too.

In this article, I’ll go through the different ways you can fix this problem. Note that if your computer is on, but the screen is showing No Signal or No Input, you should read my post on fixing blank or black screens. Now let’s go through the possible solutions.

Power Options – Control Panel

First, we need to make sure everything is set correctly in Power Options. Click on Start and type in power options or go to Control Panel (icon view) and then open Power Options from there.

Click on Start, then Control Panel and then Hardware and Sound, and then click on Power Options.

Click on the Change plan settings link that is next to the plan that is currently selected. In my case, the High Performance plan is selected, so I’ll click on the link next to it.

First, make sure that Put the computer to sleep is set to Never. Next, change the Turn off the display setting to whatever value you desire. You don’t have to set it to Never if you don’t want to. After this, click on the Change advanced power settings link.

Expand Hard disk and then expand Turn off hard disk after. Reduce the value till it gets to Never. Click OK and then click Save Changes on the Edit Plan Settings page.

Screen Saver – Control Panel

The second setting you want to check is the screen saver. Go to Control Panel, click on Personalization, and then click on Screen Saver at the bottom right.

Make sure the setting is set to None. Sometimes if the screen saver is set to Blank and the wait time is 15 minutes, it’ll look like your screen has turned off.

BIOS, Graphics Card, Monitor

The two methods above are the most common reason why your display will turn off after a set amount of time, however, there can be other possible causes.

BIOS – On some computers, the BIOS can have power saving settings that determine how the computer sleeps. These are called sleep modes (S1, S2, S3, S4, and S5). On some computers, you’ll see an option called Deep Sleep Control. You may need to disable this in order for the computer to wake up faster.

Graphics Card – If you have a high-end graphics card installed, make sure you have the latest driver and management software installed. If you go through the settings, you may find an option that puts your graphics card into lower power mode or something similar.

Monitor – Lastly, some monitors have power saving features themselves. Usually, the monitor is supposed to go into power saving mode if it doesn’t detect any input (HDMI, VGA, DVI, etc), but sometimes it happens unexpectedly.

You’ll have to press the buttons on the monitor to get access to the monitor settings. Those are about all the reasons I could think of for your display turning off when it shouldn’t. If you have any other questions or solutions, feel free to comment. Enjoy!

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