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Device Manager shows an unknown device with a yellow exclamation symbol after recovering the operating system from Microsoft Windows 10 to Windows 7 - ThinkPad E460, E560, E465, E565 - Lenovo Support US
![drivers - ACPI Error: AE_NOT_FOUND when installing/running any Linux OS - Unix & Linux Stack Exchange drivers - ACPI Error: AE_NOT_FOUND when installing/running any Linux OS - Unix & Linux Stack Exchange](https://i.stack.imgur.com/b8ikY.jpg)
drivers - ACPI Error: AE_NOT_FOUND when installing/running any Linux OS - Unix & Linux Stack Exchange
![天逸300出现ACPI\MSFT0101未知设备的解决方案- Thinkpad Lenovo软硬件技术交流专区- 合肥本本之星合肥Thinkpad专卖店合肥Apple专卖店hfthink 合肥本之星信息科技有限公司合肥本本之星|本本之星|合肥think|hfthink|合肥thinkpad专卖|合肥thinkpad专卖店|合肥水货thinkpad ... 天逸300出现ACPI\MSFT0101未知设备的解决方案- Thinkpad Lenovo软硬件技术交流专区- 合肥本本之星合肥Thinkpad专卖店合肥Apple专卖店hfthink 合肥本之星信息科技有限公司合肥本本之星|本本之星|合肥think|hfthink|合肥thinkpad专卖|合肥thinkpad专卖店|合肥水货thinkpad ...](http://webdoc.lenovo.com.cn/lenovowsi/new_cskb/uploadfile/20151031165034994.png)
天逸300出现ACPI\MSFT0101未知设备的解决方案- Thinkpad Lenovo软硬件技术交流专区- 合肥本本之星合肥Thinkpad专卖店合肥Apple专卖店hfthink 合肥本之星信息科技有限公司合肥本本之星|本本之星|合肥think|hfthink|合肥thinkpad专卖|合肥thinkpad专卖店|合肥水货thinkpad ...
lenovo-ideapad-l340-hackintosh/SSDT-2-CB-01.dsl at master · khanhtran-cse/ lenovo-ideapad-l340-hackintosh · GitHub
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HP PCs - HP 3D DriveGuard Is Displayed as an Unknown Device (ACPI\HPQ0004 or ACPI\HPQ6007) After Upgrade to Windows 10 Has Completed | HP® Customer Support
![Device Manager shows an unknown device with a yellow exclamation symbol after recovering the operating system from Microsoft Windows 10 to Windows 7 - ThinkPad E460, E560, E465, E565 - Lenovo Support US Device Manager shows an unknown device with a yellow exclamation symbol after recovering the operating system from Microsoft Windows 10 to Windows 7 - ThinkPad E460, E560, E465, E565 - Lenovo Support US](https://download.lenovo.com/km/media/images/HT117083/3eb047b450664a9989687cc590b07cc3.png)