If you observe that your PC appears to shut down slowly (or not at all), start up slowly, or say no to enter power-saving modes, it may be owed to a program or device driver interfere with Windows power settings. You can make use of Performance Information and Tools to attempt to identify these programs or device drivers.

To check for performance issues

1. Unlock Performance Information and Tools by getting on the Start button, clicking Control Panel, clicking System and Maintenance, as well as afterward clicking Performance Information and Tools.

2. Click Advanced tools.

3. Below Performance issues, click any issues that are scheduled.

4. Interpret the details in the dialog box that emerge to find out which programs or drivers are causing problems.