您的Chromebook已开机，但屏幕全黑(screen is entirely black)。这可能是由于电池或充电相关问题(battery or charging-related problems)、硬件复杂性或Chrome 操作系统(Chrome OS)问题所致。
我们整理了一些故障排除修复程序，以尝试在使用期间或启动后 Chromebook 的屏幕是否变黑。
1.增加屏幕亮度
您的Chromebook 屏幕(Chromebook’s screen)可能是黑色的，因为您不小心将屏幕亮度级别设置为最低。如果您的Chromebook已开机，但屏幕仍然黑屏，请按住屏幕亮度调高(Screen brightness up)按钮，直到显示屏亮起。
(Reboot)如果在增加亮度后屏幕仍然黑屏，请重新启动您的 Chromebook。
2. 硬重启你的 Chromebook
硬重启将刷新Chromebook 的操作系统(Chromebook’s operating system)并修复导致黑屏问题的临时系统故障。
按住电源按钮(Power button)6-10 秒，直到显示屏和键盘指示灯熄灭。
根据您的Chromebook型号，您会在Chromebook的侧面或键盘上方的某个位置找到电源按钮。等待(Wait)一两分钟，然后再次按下电源按钮(Power button)以重新启动 Chromebook。
3.让你的 Chromebook 冷却
过热的Chromebook 可能会出现启动问题(Chromebook may exhibit startup problems)。长时间使用设备或在炎热的环境中使用可能会导致设备过热。如果您的Chromebook底座感觉很热，请先让它冷却约 20-30 分钟，然后再打开电源。
如果您的Chromebook最终通过空白屏幕启动，请参阅我们关于阻止计算机过热的教程 - 这样就不会再次出现此问题。
4.断开外部USB设备
连接到Chromebook的外部设备出现问题可能会影响其启动过程并引发其他性能故障。例如，如果您的Chromebook插入了损坏的 SD 卡，则屏幕可能会变为空白，尤其是当您的Chromebook处于开发人员模式(Developer Mode)时。
Unplug/disconnect所有外部设备或配件（鼠标、U 盘(USB)、键盘、SD 卡等）并关闭 Chromebook。等待(Wait)1-2 分钟，然后重新打开电源。
5.让电池耗尽
耗尽Chromebook的电池也可以解决此问题。让设备保持开机状态（在黑屏上），直到电池电量耗尽。之后，为(Afterward)Chromebook充电至少 30 分钟，然后检查它现在是否可以通过黑屏启动。
6. 正确为您的 Chromebook 充电
如果您的 Chromebook 电池没电或电量太低而无法启动ChromeOS ，则您的 Chromebook 可能会卡在黑屏上。将 Chromebook 的交流适配器插入墙上插座，并确保另一端也正确插入 Chromebook 的充电端口。
还有一件事：确认电源插座/插座已打开。如果您的Chromebook有充电指示灯，请确保在您插入充电器时它会亮起。为Chromebook(Chromebook)充电至少 30 分钟并打开电源。
确保(Make)您使用的是开箱即用的Chromebook随附的充电器。(Chromebook)假冒(Counterfeit)或假冒的充电配件可能无法为您的Chromebook充电。更糟糕的是，它们可能会损坏Chromebook的电池、充电端口和其他硬件组件。
查看您设备的用户指南/手册或访问制造商的网站了解充电说明和要求。
7.尝试不同的充电器
如果您使用损坏或损坏的充电器，Chromebook 的电池可能无法充电。要确认您的充电配件是否正常工作，请尝试使用其他充电器为您的 Chromebook 充电。
但首先，请确保充电器与您的设备兼容。检查其额定功率和电压，并确保它们符合制造商的充电规格。如前所述，使用假冒、劣质和不兼容的充电配件可能会损坏您的Chromebook。
如果充电器可以在其他设备上使用，但无法为您的设备充电，则您的 Chromebook 的充电端口、硬盘或主板可能存在问题。在这种情况下，执行硬件重置可能会有所帮助。
8. 重置 Chromebook 的硬件
Chromebook 的硬件问题可能会导致设备卡在“黑屏死机”上。” 值得庆幸(” Thankfully)的是，谷歌(Google)提供了一种方法来刷新冻结或故障的硬件组件。该过程称为“硬重置”。
注意：(Note:)在对 Chromebook 问题进行故障排除(troubleshooting Chromebook issues)时，Google建议将硬件重置作为最后的手段。这是因为该过程可能会删除 Chromebook 的“下载”文件夹中的一些文件。
- 关闭您的 Chromebook 并等待一分钟使其完全关闭。
- 按住刷新(Refresh)键并点击电源(Power)按钮。
- 继续按住刷新(Refresh)按钮，直到Chrome 操作系统(Chrome OS)启动。当 Chromebook 的屏幕或键盘亮起时，松开刷新按钮。(Refresh button)
如果您的Chromebook是带有可拆卸键盘的平板电脑或二合一设备，请同时按住提高音量(Volume Up)和电源(Power)按钮至少 10 秒钟。
还有其他方法可以硬重置 Chromebook 的硬件，这通常因设备品牌而异。某些Chromebook(Chromebooks)有一个特殊的（重置）按钮，您可以按下它来重置设备的硬件。在某些设备上，您需要将回形针插入专用的重置孔，然后按下电源(Power)按钮。
某些带有可拆卸电池的Chromebook(Chromebooks)可以通过取出并重新插入电池进行重置。要重置非电池供电的Chromebook，请拔下并重新连接其电源线，然后打开设备。
查看此Chromebook 帮助中心教程(Chromebook Help Center tutorial)，了解有关重置 Chromebook 硬件的更多特定于设备的步骤。
让 Chromebook 的屏幕重获(Screen Back)新生
如果这些故障排除技巧都不能解决问题，您的Chromebook的屏幕可能会损坏。(Chromebook)可以肯定的是，请将您的Chromebook连接到外接显示器。如果您可以在外接显示器上访问Chrome 操作系统，但(Chrome OS)Chromebook的内置屏幕仍然黑屏，请前往附近的电脑维修店检查屏幕是否有硬件损坏。
损坏的硬盘驱动器也可能是黑屏问题的根本原因。如果 Chromebook 的硬盘启动但无法加载Chrome 操作系统(Chrome OS)，您可能需要更换它。但是，在您这样做之前，请尝试使用恢复驱动器重置您的 Chromebook(resetting your Chromebook using a recovery drive)（这将清除您的应用和设置）。请联系您的设备制造商以获取更多支持和故障排除选项。如果您的 Chromebook 仍在保修期内，或者黑屏问题是由工厂/生产缺陷引起的，则可以免费维修您的 Chromebook。
Is Your Chromebook Screen Black? 8 Fixes To Try
Your Chromebook is powered on but the screen is entirely black. This could be due to battery or charging-related problems, hardware complications, or problems with Chrome OS.
We’ve compiled a handful of troubleshooting fixes to try if your Chromebook’s screen goes black during usage or after startup.
1. Increase Screen Brightness
Your Chromebook’s screen may be black because you set the screen brightness level to the lowest by accident. If your Chromebook is powered on but the screen stays black, keep pressing the Screen brightness up button until the display comes on.
Reboot your Chromebook if the screen remains black despite increasing the brightness.
2. Hard Reboot Your Chromebook
A hard reboot will refresh your Chromebook’s operating system and fix temporary system glitches causing the black screen issue.
Press and hold the Power button for 6-10 seconds until the display and keyboard light goes off.
Depending on your Chromebook’s model, you’ll find the power button on the side of the Chromebook or somewhere above the keyboard. Wait for a minute or two and press the Power button again to restart your Chromebook.
3. Leave Your Chromebook to Cool
An overheated Chromebook may exhibit startup problems. Using your device for an extended period or in a hot environment can cause it to overheat. If the base of your Chromebook feels remotely hot, leave it to cool for about 20-30 minutes before powering it on.
If your Chromebook eventually boots past the blank screen, refer to our tutorial on stopping a computer from overheating–so this problem doesn’t reoccur.
4. Disconnect External USB Devices
Problems with external devices connected to your Chromebook can affect its startup process and trigger other performance malfunctions. If, for instance, there’s a corrupt SD card plugged to your Chromebook, the screen may go blank–especially if your Chromebook is in Developer Mode.
Unplug/disconnect all external devices or accessories (mouse, USB sticks, keyboard, SD card, etc.) and shut down your Chromebook. Wait for 1-2 minutes and power it back on.
5. Let the Battery Run Out
Draining out your Chromebook’s battery can also fix this issue. Leave the device powered on (on the black screen) until it runs out of battery juice. Afterward, charge the Chromebook for at least 30 minutes and check if it now boots past the black screen.
6. Charge Your Chromebook Correctly
Your Chromebook may get stuck on a black screen if its battery is dead, or too low to boot ChromeOS. Plug your Chromebook’s AC adapter into a wall outlet and ensure the other end is also plugged correctly to your Chromebook’s charging port.
One more thing: confirm that the power outlet/socket is powered on. If your Chromebook has a charging indicator light, make sure it lights up when you plug the charger. Charge the Chromebook for at least 30 minutes and power it on.
Make sure you’re using the charger that shipped with your Chromebook out-of-the-box. Counterfeit or fake charging accessories may not charge your Chromebook. Even worse, they could damage your Chromebook’s battery, charging port, and other hardware components.
Check your device’s user guide/manual or visit the manufacturer’s website for charging instructions and requirements.
7. Try a Different Charger
Your Chromebook’s battery may fail to hold a charge if you’re using a broken or bad charger. To confirm whether or not your charging accessories are working correctly, try charging your Chromebook with a different charger.
But first, make sure the charger is compatible with your device. Check its power and voltage ratings, and ensure they match the manufacturer’s charging specifications. As mentioned earlier, using counterfeit, substandard, and incompatible charging accessories can damage your Chromebook.
If the charger(s) works on other devices but fails to charge yours, there’s likely a problem with your Chromebook’s charging port, hard disk, or motherboard. In that case, performing a hardware reset could help.
8. Reset Your Chromebook’s Hardware
Problems with your Chromebook’s hardware can cause the device to get stuck on a “black screen of death.” Thankfully, Google provides a way to refresh hardware components that freeze or malfunction. The process is called a “Hard Reset.”
Note: When troubleshooting Chromebook issues, Google recommends a hardware reset as the last resort. That’s because the process might delete some files in your Chromebook’s “Download” folder.
- Power off your Chromebook and wait for a minute for it to shut down completely.
- Press and hold the Refresh key and tap the Power button.
- Keep holding the Refresh button until Chrome OS starts up. Release the Refresh button when your Chromebook’s screen or keyboard lights up.
If your Chromebook is a tablet or 2-in-1 device with a detachable keyboard, press and hold the Volume Up and Power buttons simultaneously for at least 10 seconds.
There are other ways to hard reset a Chromebook’s hardware, which typically varies based on the brand of your device. Some Chromebooks have a special (reset) button you can press to reset your device’s hardware. On some devices, you’ll need to insert a paperclip in a dedicated reset hole and press the Power button afterward.
Some Chromebooks with removable batteries can be reset by removing and re-inserting the battery. To reset a non-battery-powered Chromebook, unplug and reconnect its power cable, then turn on the device.
Check out this Chromebook Help Center tutorial for more device-specific steps on resetting a Chromebook’s hardware.
Bring Your Chromebook’s Screen Back to Life
Your Chromebook’s screen might be damaged if none of these troubleshooting tricks resolve the problem. To be sure, connect your Chromebook to an external monitor. If you’re able to access Chrome OS on the external monitor but your Chromebook’s built-in screen remains black, visit a nearby computer repair store to have the screen checked for hardware damage.
A broken hard drive could also be the root cause of the black screen issue. You may have to replace your Chromebook’s hard drive if it comes on but fails to load Chrome OS. Before you do that, however, try resetting your Chromebook using a recovery drive (this will erase your apps and settings). Contact your device manufacturer for more support and troubleshooting options. Your Chromebook may be repaired for free if it’s still under warranty, or if the black screen issue is due to a factory/production defect.
