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Follow these steps and check the status.
- Access “Control Panel” and click on “Power Options”.
- Click on “change plan settings”.
Set “never” for “put the computer to sleep”. This will ensure that the computer does not go to sleep mode.
Select couple of minutes for this option “turn off the display”. When you select 1 or 2 minutes for the turn off display, the battery power consumption is also reduced.
Once this is done save the settings and check if this helps.
Power plans: frequently asked questions: http://windows.microsoft.com/en-us/windows/power-plans-faq#1TC=windows-8
Reply with the status of the issue and we will be glad to offer our assistance.