For "Sleep Mode" issues, see if this helps...
1. Go into "Control Panel" and click the "Power Options".
2. Next to the plan that is currently selected click "Change Plan Settings".
3. Now click "Change Advanced Power Settings".
4. Open the "Sleep Setting" and make sure it is set to "Never".
5. Now click "Apply" and then click "OK".
7. Finally shut down and power up the computer.