当您尝试打开 iPad 时，您是否看到黑屏？还是它似乎开始但卡在Apple标志上？当您的 iPad 无法开机时，电池相关问题、拙劣的系统软件更新以及硬件级别的问题通常是问题所在。
然而，在认输并前往当地的Genius Bar之前，最好先了解一下下面的故障排除提示，看看您是否可以自己修理 iPad。
强制重启你的 iPad
在极少数情况下，您的 iPad 可能会在您开机时冻结。如果您连续看到完全黑屏或Apple标志，强制重启设备可能有助于正确启动。
有 Home 键的 iPad(iPads That Have a Home Button)
同时按住主(Home )屏幕按钮和顶部(Top )按钮，直到 iPad 启动并看到Apple标志。
没有 Home 键的 iPad(iPads That Don’t Have a Home Button)
一个接一个地快速按下并释放提高音量(Volume Up)按钮和降低音量(Volume Down)按钮。然后，立即按住顶部(Top )按钮，直到看到Apple标志。
如果您的 iPad 开机没有问题，最好立即备份它(back it up immediately)。如果问题再次出现，请进行设置或恢复出厂设置(settings or a factory reset)。
如果什么都没发生，请继续进行其余的修复。
收费至少一个小时
尽管您的 iPad 可能在您上次使用时似乎有足够的电量，但有很多原因会导致电池(reasons that can drain the battery)快速耗尽并且您的 iPad 无法开机。如果您看到黑屏并且在按下强制重启按钮组合时没有任何反应，请为您的 iPad 充电至少一个小时，然后再尝试再次打开它。
更换闪电电缆
充电线通常会在几年后磨损（在某些情况下甚至更早），并且可能会完全停止为 iPad 充电。如果 iPad 连接到电源很长一段时间后仍无法打开，那么很可能就是这种情况。
检查(Check)是否有退化迹象，并使用Apple提供的其他(Apple)Lightning或USB-C线缆。如果您使用第三方替代品，请确保它已通过 MFi 认证(MFi-certified)。
更换充电适配器
撇开充电线不谈，不要忽视您可能还在处理发生故障的 iPad 充电适配器这一事实。如果可能，请尝试更改它。您还可以使用 iPhone 充电器（虽然需要更长的时间，但仍可以为 iPad 充电）或将其连接到Mac或 PC。
清洁充电口
如果您的 iPad 似乎仍然无法充电，您应该考虑清洁其 Lightning 或 USB-C 充电端口(cleaning its Lightning or USB-C charging port)。有时，棉绒和其他碎屑会聚集在内部，堵塞触点，并阻止设备充电。
用几次短时间的压缩空气吹出充电端口（避免将喷嘴放在端口内）或用木制或塑料牙签轻轻撬开任何粘性物质，应该有助于清除内部的任何东西。
尝试问 Siri 一些事情
您的 iPad 可能已正确打开，但其显示可能有问题。尝试调用Siri——(Siri—press)按住主屏幕(Home )或顶部(Top )按钮几秒钟。跟着(Follow)向她要东西。
如果她回应，您可能正在处理有缺陷的显示器。无论如何，通过其余的修复工作仍然是一个好主意。这应该可以帮助您备份 iPad，并排除其他与软件相关的问题。
连接到 iTunes/Finder
通过USB(USB)将 iPad 连接到Mac或 PC，并检查它是否显示在 iTunes/Finder 上。如果是，请选择它并（前提是您之前“信任”过该设备）立即创建本地或 iCloud 备份。
然后，选择检查更新(Check for Update )以安装任何新的 iPadOS 更新。如果这没有帮助，请选择“恢复 iPad”(Restore iPad)选项来执行设置重置（您之前应该禁用“查找我的 iPad”(Find My iPad)才能使用该选项）。
进入恢复模式
如果 iTunes/Finder 无法检测到您的 iPad，您必须将其置于恢复模式(Recovery Mode)。即使您之前没有“信任”该设备或禁用“查找我的(Find My)iPad”，您也可以更新或重置您的 iPad。开始之前，请确保通过USB将 iPad 连接到(USB)Mac或 PC 。
有 Home 键的 iPad(iPads That Have a Home Button)
按住主(Home )屏幕按钮和顶部(Top )按钮，直到看到Apple标志。继续(Continue)按住它，直到进入恢复模式(Recovery Mode)。
没有 Home 键的 iPad(iPads That Don’t Have a Home Button)
一个接一个地快速按下并释放提高音量(Volume Up)按钮和降低音量(Volume Down)按钮。然后，立即按住顶部(Top )按钮，直到看到Apple标志。继续(Continue)按住它，直到进入恢复模式(Recovery Mode)。
进入恢复模式(Recovery Mode)后，选择更新(Update )选项重新安装系统软件而不会丢失任何数据。如果失败，请使用“恢复 iPad”(Restore iPad )选项将 iPad 重置为出厂设置。如需完整的演练，请查看此iPad 恢复模式教程(iPad Recovery Mode tutorial)。
进入 DFU 模式
如果您的 iPad 无法进入恢复模式(Recovery Mode)，请尝试将其置于DFU（设备固件更新(Device Firmware Update)）模式(Mode)。这是一个高级恢复环境，您可以使用它从头开始重新安装系统软件。同样(Again)，请确保在开始之前将 iPad 连接到您的计算机。
注意：(Note: )与恢复模式(Recovery Mode)不同，iPad 上的屏幕即使在进入DFU 模式(DFU Mode)后仍会保持黑暗。
有 Home 键的 iPad(iPads That Have a Home Button)
按住Home和Top按钮 5 秒钟。然后，松开顶部(Top)按钮，但继续按住主页(Home )按钮，直到您在 iTunes/Finder 中看到恢复模式屏幕。(Recovery Mode)
没有 Home 键的 iPad(iPads That Don’t Have a Home Button)
一个接一个地快速按下并释放提高音量(Volume Up)按钮和降低音量(Volume Down)按钮。然后，立即按住顶部(Top )按钮。
屏幕变黑后，按住降低音量(Volume Down)（不松开侧面(Side )按钮）5 秒钟。
最后，松开侧边(Side )按钮，但继续按下降低音量(Volume Down )按钮，直到您在 iTunes/Finder 中看到恢复模式屏幕。(Recovery Mode)
在 DFU 模式下，使用“恢复 iPad”(Restore iPad)选项重置您的 iPad。iTunes/Finder 会将最新的系统软件包下载到您的Mac或 PC 并重置您的 iPad。如果它最终成功打开您的 iPad，您可以使用之前的 iCloud 或 iTunes/Finder 备份来取回您的数据。
拿去修理
如果上述修复都没有帮助，并且您的 iPad 仍然无法打开，则您可能正在处理严重退化的电池或有缺陷的显示器。各种形式的物理损坏（您的 iPad 是否掉落？）或液体损坏也可能导致其无法开机。您的下一步行动应该是让Apple Genius或 Apple 认证的技术人员仔细查看它。
How to Fix When iPad Won’t Turn On
Do you see a black screen when you try to turn on your iPad? Or does іt appear to start but get stuck at the Apple logo instead? Battery-related issues, botched system software updates, and problems at thе hardware level are often the prоblem when your iPad won’t turn on.
Before throwing in the towel and heading over to the local Genius Bar, however, it’s always a good idea to run through the troubleshooting tips below to see if you can fix your iPad yourself.
Force-Restart Your iPad
On rare occasions, your iPad can freeze while you turn it on. If you see a completely black screen or the Apple logo continuously, force-restarting the device may help it boot correctly.
iPads That Have a Home Button
Press and hold both the Home button and the Top button at the same time until your iPad boots up, and you see the Apple logo.
iPads That Don’t Have a Home Button
Quickly press and release the Volume Up button and the Volume Down button one after the other. Then, hold down the Top button immediately until you see the Apple logo.
If your iPad turned on without issues, it’s best to back it up immediately. If the problem recurs, follow up with a settings or a factory reset.
Continue with the rest of the fixes if nothing happened.
Charge for at Least an Hour
Although your iPad may’ve appeared to have enough charge the last time you used it, there are many reasons that can drain the battery rapidly and your iPad won’t turn on. If you see a black screen and nothing happens when pressing the force-restart button combination, charge your iPad for at least an hour before trying to turn it on again.
Replace Lightning Cable
Charging cables usually tend to wear out after a couple of years (or even sooner in some cases) and can stop charging your iPad altogether. If you can’t turn on your iPad even after having it connected to a power source for an extended amount of time, then that might very well be the case.
Check for signs of degradation and use a different Lightning or USB-C cable by Apple. If you use a third-party replacement capable, make sure that it’s MFi-certified.
Change Charging Adapter
The charging cable aside, don’t discount the fact that you may also be dealing with a malfunctioning iPad charging adapter. If possible, try changing it. You can also use an iPhone charger (which will take longer but still charge the iPad) or connect it to a Mac or PC instead.
Clean Charging Port
If your iPad still doesn’t appear to charge, you should look into cleaning its Lightning or USB-C charging port. Sometimes, lint and other debris can collect inside, clog up the contacts, and prevent the device from charging.
Blowing out the charging port with several short bursts of compressed air (avoid putting the nozzle inside the port) or gently prying away any gunk with a wooden or plastic toothpick should help get rid of anything inside.
Try Asking Siri Something
Your iPad may’ve turned on correctly, but there could be something wrong with its display. Try invoking Siri—press and hold the Home or the Top buttons for a couple of seconds. Follow by asking her for something.
If she responds, you’re likely dealing with a defective display. Regardless, it’s still a good idea to work your way through the rest of the fixes. That should help you backup your iPad as well as a rule out additional software-related issues.
Connect to iTunes/Finder
Connect your iPad to a Mac or PC via USB and check if it shows up on iTunes/Finder. If it does, select it and (provided that you’ve ‘trusted’ the device previously) immediately create a local or iCloud backup.
Then, select Check for Update to install any new iPadOS updates. If that doesn’t help, select the Restore iPad option to perform a settings reset (you should’ve disabled Find My iPad previously to use the option).
Enter Recovery Mode
If iTunes/Finder fails to detect your iPad, you must put it into Recovery Mode. You can then update or reset your iPad even if you’ve not “trusted” the device or disabled Find My iPad previously. Before you start, make sure to connect your iPad to your Mac or PC over USB.
iPads That Have a Home Button
Press and hold down both the Home button and the Top button until you see the Apple logo. Continue holding it down until you get into Recovery Mode.
iPads That Don’t Have a Home Button
Quickly press and release the Volume Up button and the Volume Down button one after the other. Then, immediately hold down the Top button until you see the Apple logo. Continue holding it down until you get into Recovery Mode.
After entering Recovery Mode, select the Update option to reinstall the system software without losing any data. If that fails, use the Restore iPad option to reset the iPad to factory settings. For a complete walkthrough, check out this iPad Recovery Mode tutorial.
Enter DFU Mode
If your iPad fails to enter Recovery Mode, try putting it into DFU (Device Firmware Update) Mode. It’s an advanced recovery environment that you can use to re-install the system software from scratch. Again, make sure to connect the iPad to your computer before you begin.
Note: Unlike Recovery Mode, the screen on your iPad will remain dark even after entering DFU Mode.
iPads That Have a Home Button
Press and hold both the Home and the Top buttons for 5 seconds. Then, release the Top button but keep holding the Home button until you see the Recovery Mode screen in iTunes/Finder.
iPads That Don’t Have a Home Button
Quickly press and release the Volume Up button and the Volume Down button one after the other. Then, hold down the Top button immediately.
As soon as the screen turns black, hold down the Volume Down (without releasing the Side button) for 5 seconds.
Finally, release the Side button but keep pressing the Volume Down button until you see the Recovery Mode screen in iTunes/Finder.
In DFU Mode, use the Restore iPad option to reset your iPad. iTunes/Finder will download the latest system software package to your Mac or PC and reset your iPad. If it eventually succeeds in turning on your iPad, you can get your data back using a previous iCloud or iTunes/Finder backup.
Take It For Repairs
If none of the fixes above helped and your iPad still won’t turn on, you may be dealing with a severely degraded battery or a defective display. Various forms of physical damage (did you drop your iPad?) or liquid damage can also prevent it from turning on. Your next course of action should be to have an Apple Genius or an Apple-certified technician take a closer look at it.
