Try these steps below:
Right click on [charge icon] in taskbar and select "power options"
to the right of the currently selected power plan click on "change plan settings"
Then click "change advanced power settings"
in drop down list select which ever selection has "[Active]" attached to it.
Then scroll to bottom of list where you should find a listing "ATI Graphics Power Settings"
Expand this listing and its inner "ATI PowerPlay Settings" until you see the "On Battery: and Plugged in:" options are shown.
change the "On battery:" option to "Maximum Performance" and click "OK"
There is some issue with the battery/power supply software that's installed.
Checking in to see if you still need help with this issue, if so please reply at your convenience.