How to disable power management.
- Click the Start button, and then click Control Panel.
- In the Control Panel window, under Pick a category, double-click the Performance and Maintenance icon.
- In the Performance and Maintenance window, under or pick a Control Panel icon, double-click the Power Options icon.
- In the Power Options Properties window, on the Power Schemes tab, in the Power Schemes box, click the down arrow.
- Click to select the Always On option.
- Click the OK button.