前陣子處理了一個Lenovo E531從Windows 8.1升級到Windows 10的案例，升級過程相當的順利，但完成後再裝置管理員的硬體列表中卻出現了一個「無法識別的裝置」的未驅動項目，查看詳細資訊是屬於ACPI相關的設備，小編今天就來分享一下如何處理這個狀況吧。
[遇到的狀況]
[解決的方法]
1、下載Power Management Interface(ACPI) Drive
下載主頁面：
https://support.lenovo.com/br/en/downloads/DS539638
32位元快速下載連結：
https://download.lenovo.com/pccbbs/mobiles/n2hku07w_x86.exe
64位元快速下載連結：
https://download.lenovo.com/pccbbs/mobiles/n2hku07w_x64.exe
※該版本驅動支援的作業系統：
Windows 10
Windows 8.1
Windows 8
Windows 7
適用的Lenovo 設備清單：
ThinkPad 8
ThinkPad 10 Gen 1 (Machine types: 20C1, 20C3)
ThinkPad 10 Gen 2 (Machine types: 20E3, 20E4)
ThinkPad 11e Gen 1 (Machine types: 20D9, 20DA)
ThinkPad 11e Gen 2 (Machine types: 20E6, 20E8, 20ED, 20EE)
ThinkPad 11e Gen 3 (Machine types: 20G9, 20GB)
ThinkPad 11e Gen 4 (Machine types: 20HT, 20HV)
ThinkPad 13 Gen 1(Machine types: 20GJ, 20GK)
ThinkPad E450, E450c, E455, E460, E465
ThinkPad E550, E550c, E555, E560, E560p, E565
ThinkPad Edge E130, E135, E145
ThinkPad Edge E330, E335
ThinkPad Edge E430, E430c, E431, E435, E440, E445
ThinkPad Edge E530, E530c, E531, E535, E540, E545
ThinkPad Edge S430
ThinkPad Helix (Machine types: 369x, 370x)
ThinkPad Helix 2nd Gen (Machine types: 20CG, 20CH)
ThinkPad L330
ThinkPad L430, L440, L450, L460
ThinkPad L530, L540, L560
ThinkPad P40 Yoga
ThinkPad P50, P50s
ThinkPad P70
ThinkPad S531, S540
ThinkPad T430, T430i, T430s, T430si, T430u, T431s, T440,
T440p, T440s
ThinkPad T450, T450s, T460, T460p, T460s
ThinkPad T530, T530i, T540p, T550, T560
ThinkPad Twist S230u
ThinkPad W530, W540, W541, W550s
ThinkPad X1 Carbon Gen 1 (Machine types: 34xx)
ThinkPad X1 Carbon Gen 2 (Machine types: 20A7, 20A8)
ThinkPad X1 Carbon Gen 3 (Machine types: 20BS, 20BT)
ThinkPad X1 Carbon Gen 4 (Machine types: 20FB, 20FC)
ThinkPad X1 Tablet Gen 1 (Machine types: 20GG, 20GH)
ThinkPad X1 Yoga Gen 1 (Machine types: 20FQ, 20FR)
ThinkPad X230, X230 Tablet, X230i, X230i Tablet, X230s
ThinkPad X240, X240s, X250, X260
ThinkPad Yoga 11e Gen 1 (Machine types: 20D9, 20DA)
ThinkPad Yoga 11e Gen 2 (Machine types: 20E5, 20E7)
ThinkPad Yoga 11e Gen 3 (Machine types: 20G8, 20GA)
ThinkPad Yoga 11e Gen 4 (Machine types: 20HS, 20HU)
ThinkPad Yoga 14
ThinkPad Yoga 260
ThinkPad Yoga 460
Lenovo B4400, B4400s, B4450s
Lenovo E4430
Lenovo K29, K49
Lenovo K2450, K4350, K4450
Lenovo M4400, M4400s, M4450
Lenovo Tablet 10
Lenovo V4400, V4400u
2、安裝Power Management Interface(ACPI) Drive
(1)、執行上一步驟下載的安裝程式
(2)、點選「Next」進行下一步驟
(3)、勾選「I accept the agreement」，點選「Next」進行下一步驟
(4)、點選「Next」進行下一步驟
(5)、點選「Install」進行安裝的步驟
(6)、勾選「install lenovo Power Management Driver now」，並點選「Finish」結束檔案解壓縮步驟進行安裝驅動的步驟
(7)、點選「下一步」進行下一步驟
(8)、點選「完成」結束驅動程式更新步驟
(9)、重新開機一次