Dell POWEREDGE 2900
Start the console session.
Plug a monitor into device using a VGA cable.
Plug a USB keyboard into device USB/PS2 port.
Plug power into device and if a power button exists, turn it on.
Start the Remote Access Configuration Utility.
When prompted and before the countdown ends press Ctrl E for Remote Access Setup:
Erase configuration.
Navigate with the keyboard arrow keys to select the Reset To Default menu item and press the Enter key, then select YES (continue) and press Enter again:
Allow the resetting process to complete:
End the session.
Unplug the VGA, keyboard and power leads from the device.