This section answers some frequently asked questions about standby and hibernation.

Most probably because your are running with a standard VGA graphics driver. Install the required graphics card driver to enable suspend.

You need to enable hibernation under power options. See requirements for more details.

Have a look at eventlog, check for blocking services or drivers. Also verify that external drives (USB or eSATA) can be used with standby. Sometimes a driver update is required to make that work. 

When a manual initiated standby is working check the runtime diagram in Lights-Out. All sources which keep your server active are recorded there.

This is either a driver problem or a misconfigured network card. Update your drivers and verify your network card settings.

Some machines require an additional parameter in boot.ini to limit the amount of usable memory: /MAXMEM=4096 or /MAXMEM=4095. 

See Microsoft KBB888575

Lights-Out supports a couple of system activities which may result in a server wake-up.

Frequently asked questions