您的USB(USB)键盘是否在 Windows PC 上不断断开并重新连接？不要恐慌！完成此潜在修复列表。
重新启动您的计算机
只需关闭计算机然后重新打开，即可解决大量 USB、蓝牙和外围设备问题。(Bluetooth)由于这是一个简单的解决方案，我们建议您先执行此操作，以防问题是由瞬态故障引起的。
排除键盘嫌疑人
很容易认为计算机而不是键盘可能有问题，但您的键盘是最容易消除的组件，是问题的根源。尝试在另一台计算机上使用键盘。如果问题出现在键盘周围，则可能是设备问题。
不幸的是，您无法使用有故障的键盘做很多事情，但是某些无线键盘确实可以让您更新其固件。如果已为您的键盘发布了新固件，则可能值得安装它以解决相关错误。如果问题是特定于您的键盘的，您还应该考虑联系制造商寻求技术支持。
1.使用屏幕键盘
如果您可以在“开始”菜单(Start Menu)搜索栏中键入搜索词，则以下许多修复会容易得多。如果您的键盘一直断开连接或根本无法使用，那可能会很麻烦。因此，最好激活屏幕键盘，以便您可以使用鼠标指针键入。
- 打开“开始”菜单(Start Menu)，然后转到Settings > Personalization > Taskbar。
- 打开触控键盘。
- 一个小图标将出现在任务栏的通知区域中。
- 如果您左键单击此键盘图标，将弹出一个触摸键盘，允许您输入文本！
2.运行键盘硬件疑难解答(Keyboard Hardware Troubleshooter)
键盘疑难解答是一个很好的起点。
打开开始菜单(Start Menu)并搜索“修复键盘”，然后选择查找(Find)并修复键盘问题。您还可以通过在控制面板(Control Panel)中搜索来找到此疑难解答。
工具打开后，只需按照说明操作并检查应用程序是否检测到任何问题。它可能会尝试更新驱动程序或重新启动USB控制器，因此如果它确实发现问题，您可能需要批准一些事情。
3. 检查你的电池！
如果您使用的是电池供电的无线键盘，请确保您的电池电量充足。如果您有碱性电池，则尤其如此，因为它们可以在键盘关闭时恢复一些电压，使键盘看起来好像正在连接，然后在您打开它时断开连接。
如果您的键盘具有集成锂电池，它也可能是旧的或损坏的，在这种情况下，电池或整个键盘可能需要更新。
4.更新Windows或回滚(Roll Back)更新
Windows会收到源源不断的更新，其中一个更新导致硬件问题的情况并不少见。您的Windows安装也可能需要更新才能使用当前版本的软件包或驱动程序。
如果您的问题是在Windows更新后立即开始的，您可能希望回滚该更新(roll back that update)。如果您有待处理的Windows(Windows)更新
，您可能想尝试相反的方法。
5. 更新您的芯片组(Chipset)或蓝牙(Bluetooth)驱动程序
如果您使用的是USB键盘，则该硬件由主板的芯片组驱动程序控制。芯片组是主板上集成外围设备和处理器的集合。Windows可能为您的芯片组安装了不正确的驱动程序，或者芯片组对于您正在使用的Windows或应用程序版本已过时。
答案是访问您遇到问题的主板、笔记本电脑或预制计算机的制造商网站，并下载最新的芯片组驱动程序。如果您使用的是蓝牙(Bluetooth)键盘，您可能需要为您的计算机下载最新的蓝牙(Bluetooth)驱动程序，该驱动程序应与芯片组驱动程序位于同一下载页面。
6. 检查障碍物(Obstructions)和干扰(Interference)
如果您使用的是无线键盘，信号干扰是您可能会遇到断开连接的另一个常见原因：
- 你离电脑太远了吗？
- 检查计算机和键盘之间是否没有金属物体。
- 检查是否没有无线电干扰源，例如许多其他 Wi-Fi 或蓝牙(Bluetooth)设备。电动机、微波炉等也是如此。
- 如果您的计算机有外部蓝牙(Bluetooth)适配器，请重新定位它或天线以获得更好的蓝牙(Bluetooth)连接。
7.禁用USB选择性挂起
Windows具有称为USB选择性挂起的电源管理功能。这允许USB集线器暂停特定连接器上的设备，而不会影响其他端口和连接到它们的设备。
有时，选择性暂停可能会错误地暂停您的键盘所连接的端口，然后需要一两秒钟才能将其重新联机，这可能会让用户感觉键盘断开连接。
值得禁用此功能，看看这是否是您的键盘功能间歇性的原因。
- 打开开始菜单(Start Menu)并搜索Edit Power Plan。
- 在编辑计划设置窗口(Edit Plan Settings Window)中，选择更改(Change)高级电源设置。
- 在电源选项(Power Options)窗口中，查找USB设置> USB选择性挂起设置，然后选择启用或禁用电池、交流电源或两者的功能。
如果您在电源管理(Power Management)下看不到该选项，您可以尝试在设备管理器(Device Manager)中将其关闭。
- 打开开始菜单(Start Menu)，输入设备管理器(Device Manager)，在弹出的时候选择结果。
- 展开通用串行总线控制器(Universal Serial Bus Controllers)部分，然后右键单击根集线器(Root Hub)或通用集线器(Generic Hub)并选择属性。
- 在“电源管理(Power Management)”选项卡下，取消选中“允许(Allow)此计算机关闭此设备”，然后选择“确定”以保存更改。
8. 切换到专有无线标准(Proprietary Wireless Standards)
一些无线键盘为您提供蓝牙(Bluetooth)或键盘随附的专有无线适配器之间的选择。例如，罗技统一接收器(Logitech Unified Receiver)可与许多罗技蓝牙(Logitech Bluetooth)键盘配合使用。如果您遇到与蓝牙(Bluetooth)相关的问题，这是一种可以解决断开连接问题的解决方法。
9.将键盘(Keyboard Into)插入不同的 USB 端口(Different USB Port)
自从USB在 90 年代后期首次引入家用电脑以来，它总是有一个奇怪的神秘错误，即USB设备在一个端口上无法正常工作，但在另一个端口上却可以正常工作，即使两个端口都使用相同的USB控制器.
发生这种情况的原因实际上有很多，但在每种情况下，解决方案通常是将键盘移至不同的USB端口或将无线USB接收器移至另一个端口。
10.将键盘直接(Keyboard Directly Into)插入PC
一些无线键盘让您可以选择使用有线连接。因此，如果您的蓝牙(Bluetooth)键盘一直断开连接，您可以使用电缆。即使只是作为临时修复！
如果您通过集线器或其他USB设备使用有线键盘，请尝试将键盘直接插入计算机。移除所有电缆延长线。如果键盘和计算机之间的任何设备无法正常工作，它们可能会干扰键盘。
确保(Make)将键盘直接插入台式 PC 主板上的USB端口之一。(USB)这意味着避免使用前置USB端口或任何使用主板延长线的端口。
如果插入直接连接到主板的USB端口后问题仍然存在，则可能是主板的芯片组驱动程序有问题。
11.在设备管理器中卸载并重新安装(Device Manager)键盘(Keyboard)
如果上述提示都不能解决您的问题，最后一个值得尝试的技巧是从设备管理器(Device Manager)中删除键盘并重新安装。
- 右键单击(Right-click)开始菜单(Start Menu)按钮并选择设备管理器(Device Manager)。
2.展开键盘(Keyboards)部分，如果这是您第一次使用设备管理器(Device Manager)，您可能需要先展开顶部类别。查找(Look)您遇到问题的键盘，然后右键单击它。选择卸载设备(Select Uninstall Device)。
3.在弹出的确认窗口中再次选择卸载。(Select Uninstall)如果系统询问您，请不要勾选尝试删除此设备的驱动程序。(Attempt)如果此方法第一次不起作用，您可能需要在第二次尝试时删除键盘驱动程序。
4. 现在键盘应该从设备列表中消失了。选择Action > Scan硬件更改。
列表在刷新时应该会闪烁几次，键盘现在应该回到原来的位置。再次尝试使用键盘以查看断开连接问题是否已解决。
Keyboard Keeps Disconnecting in Windows? 11 Ways to Fix
Does your USB keyboard keep disconnecting and reconnecting on уоur Windows PC? Don’t panic! Work through thiѕ list of potential fixes.
Reboot Your Computer
Loads of USB, Bluetooth, and peripheral problems can be solved by simply turning your computer off and then turning it on again. Since this is an easy solution, we suggest you do it first just in case the problem is due to a transient glitch.
Eliminate the Keyboard as a Suspect
It’s tempting to think that there might be something wrong with the computer rather than the keyboard, but your keyboard is the easiest component to eliminate as the source of the problem. Try using the keyboard with a different computer. If the problem follows the keyboard around, it’s likely an issue with the device.
Unfortunately, there’s not much you can do with a faulty keyboard, but some wireless keyboards do let you update their firmware. If new firmware has been released for your keyboard, it may be worth installing it in case it solves a related bug. If the problem is specific to your keyboard, you should also consider contacting the manufacturer for technical support.
1. Use the On-Screen Keyboard
Many of the fixes below are much easier if you can type search terms into the Start Menu search bar. If your keyboard is disconnecting all the time or won’t work at all, that can be a hassle. So it’s a good idea to activate the on-screen keyboard so that you can type with your mouse pointer instead.
- Open the Start Menu, then go to Settings > Personalization > Taskbar.
- Toggle Touch Keyboard on.
- A small icon will appear in the notification area of your Taskbar.
- If you left-click on this keyboard icon, a touch keyboard will pop up, allowing you to enter text!
2. Run the Keyboard Hardware Troubleshooter
The keyboard troubleshooter is a good place to start.
Open the Start Menu and search for “fix keyboard” then select Find and fix keyboard problems. You can also find this troubleshooter by searching in the Control Panel.
Once the tool opens, simply follow the instructions and check whether any problems are detected by the app. It may try to update drivers or restart the USB controller, so you may have to approve a few things if it does find issues.
3. Check Your Batteries!
If you’re using a battery-powered wireless keyboard, make sure your batteries have enough power. This is especially true if you have alkaline batteries because they can recover some voltage when the keyboard is off, making it appear as if the keyboard is connecting and then disconnecting when you switch it on.
If your keyboard has an integrated lithium battery, it may also be old or damaged, in which case the battery or the whole keyboard may need an update.
4. Update Windows or Roll Back the Update
Windows receives a constant stream of updates, and it’s not uncommon for one of these updates to cause hardware issues. It’s also possible that your Windows installation needs an update to work with the current version of your software packages or drivers.
If your problems started right after a Windows update, you may want to roll back that update. You may want to try the opposite if you have pending Windows updates.
5. Update Your Chipset or Bluetooth Drivers
If you’re using a USB keyboard, that hardware is governed by your motherboard’s chipset drivers. The chipset is the collection of integrated peripherals and processors on the motherboard. Windows may have installed an incorrect driver for your chipset, or the chipset is outdated for the version of Windows or applications you’re using.
The answer is to head to the manufacturer’s website of the motherboard, laptop, or prebuilt computer you’re having issues with and download the latest chipset driver. If you’re using a Bluetooth keyboard, you may want to download the latest Bluetooth driver for your computer, which should be on the same download page as the chipset driver.
6. Check for Obstructions and Interference
If you’re using a wireless keyboard, signal interference is another common reason you may suffer disconnections:
- Are you too far from the computer?
- Check that there are no metal objects between the computer and the keyboard.
- Check that there aren’t sources of radio interference, such as many other Wi-Fi or Bluetooth devices. The same goes for electrical motors, microwave ovens, etc.
- If your computer has an external Bluetooth adapter, reposition it or its antenna for a better Bluetooth connection.
7. Disable USB Selective Suspend
Windows has a power management feature known as USB selective suspend. This allows the USB hub to suspend devices on specific connectors without affecting other ports and the devices connected to them.
Sometimes, selective suspension can erroneously suspend the port your keyboard is connected to and then take a second or two to bring it back online, which may feel like a keyboard disconnect to the user.
It’s worth disabling this feature to see if that’s the cause of your intermittent keyboard functionality.
- Open the Start Menu and search for Edit Power Plan.
- In the Edit Plan Settings Window, select Change advanced power settings.
- In the Power Options window, look for USB settings > USB selective suspend setting, and then choose to enable or disable the function on battery, AC power, or both.
If you don’t see the option under Power Management, you can try toggling it off in the Device Manager.
- Open the Start Menu, type Device Manager, and select the result when it pops up.
- Expand the Universal Serial Bus Controllers section, then right-click on the Root Hub or Generic Hub and select properties.
- Under the Power Management tab, uncheck ” Allow this computer to turn off this device, ” then select OK to save your changes.
8. Switch to Proprietary Wireless Standards
Some wireless keyboards offer you a choice between Bluetooth or a proprietary wireless adapter that should have come with the keyboard. For example, the Logitech Unified Receiver works with many Logitech Bluetooth keyboards. If you’re having Bluetooth-related problems, this is one workaround that can solve your disconnection problems.
9. Plug Your Keyboard Into a Different USB Port
Since USB was first introduced to home computers in the late 90s, it’s always had the odd mysterious bug where a USB device wouldn’t work correctly in one port, but will work perfectly well in another, even if both ports use the same USB controller.
There are actually numerous reasons why this happens, but in every situation the solution is usually to move the keyboard to a different USB port or to move the wireless USB receiver to another port.
10. Plug Your Keyboard Directly Into the PC
Some wireless keyboards give you the option of using a wired connection. So if your Bluetooth keyboard keeps disconnecting, you could use a cable. Even if only as a temporary fix!
If you’re using a wired keyboard through a hub or through another USB device, try plugging the keyboard directly into the computer. Remove any cable extensions as well. If any of the devices between the keyboard and the computer aren’t working correctly, they might interfere with the keyboard.
Make sure to plug the keyboard into one of the USB ports directly on the motherboard on desktop PCs. That means avoiding using the front USB ports or any ports that use extension cables from the motherboard.
If the problem persists even when plugged into a USB port directly connected to the motherboard, it’s likely to be an issue with the motherboard’s chipset driver.
11. Uninstall and Reinstall the Keyboard in Device Manager
If none of the tips above solve your issue, the last trick worth trying is removing the keyboard from Device Manager and reinstalling it.
- Right-click on the Start Menu button and select Device Manager.
2. Expand the Keyboards section, you may have to expand the top category first if this is your first time using Device Manager. Look for the keyboard you’re having issues with, then right-click on it. Select Uninstall Device.
3. Select Uninstall again in the confirmation window that pops up. Don’t tick Attempt to remove the driver for this device if you’re asked. You may want to remove the keyboard driver on a second attempt if this method doesn’t work the first time.
4. Now the keyboard should be gone from the list of devices. Select Action > Scan for hardware changes.
The list should flash a few times as it refreshes, and the keyboard should now be back in the same place. Try to use the keyboard again to see if the disconnecting issue has been resolved.
