Why is my laptop connected to the power adapter after the screen to darken?
Under normal circumstances should be connected to the power to light up on you can hold the notebook keyboard below fn above f1 ~ f12 from the keys to find a light like the button should be able to light up. hope this helps
Should be your power management settings.
For example, you set the brightness of the screen using the power supply is 6, the use of the battery brightness is 8.
There may be such, look at the settings bar.
It is certainly your power management set up the problem, agreed to talk upstairs look at their own power settings to change just fine
It is usually connected to the charger after the screen will light up, you check the power settings, WIN7 - control panel - hardware and sound - power options, if the external power supply set the energy saving mode, and the battery mode will not appear you say Case. Otherwise it shows that your charger has a problem
