Hi there. In the Vaio battery power settings I cannot adjust from 'battery life' to 'adaptive' etc like I can on the ac power settings. The actual text in the windows box is light grey and I cannot highlight it or use the dropdown - the list is inaccessible. Why is that? My pc is dead slow whilst running on battery power and I want to change the setting to adaptive. Here is a look at the menu I'm on about:
