DELL inspiron 15-3567默认给的是45W的适配器电源
Alert! You have attached an undersized 45W power adapter to your system,which is less then the recommended 65W power adapter. To continue operating at peak performance.your system may also draw power from the battery. The battery charges only when the power provided by the adapter is greater the the needs of your system, Use a Dell 65W(or greater)power adapter to enable charging during peak system performance.
F12 选择进入BIOS--POST Behavior
默认Adapter Warnings--Enable Adapter Warnings是勾选上的