You can use the Powercfg.exe tool to help you determine the reason(s) the computer’s sleep power features are not available. The Powercfg.exe tool is installed with Windows 7.
To set the active power plan by using the Powercfg.exe tool, follow these steps:
1. Click Start , click All Programs, and then click Accessories.
2. Right-click Command Prompt, and then click Run as Administrator. If you are prompted for an administrator password or for confirmation, type your password, or click Continue.
3. Type the following command, and then press ENTER:
4. You have this issue described in this article if you see “The VGAPNP.SYS display driver does not support standby. Please consult your hardware vendor for an updated display driver.”
For more information about the Powercfg.exe tool, visit the following Microsoft Web page:
Artikelnummer: 2579311 – Letzte Überarbeitung: 08.07.2011 – Revision: 1