Can not wake up client computer from sleep or standby Turn On feature will not work if your client computers has no Wake-on-LAN feature or is not activated/enabled in the BIOS.   A power supply to the computer must be ON so that it can receive and execute the turn on signal.   Your computer must have the S3 standby/sleep mode in the BIOS. (For waking up computers remotely from standby/sleep mode, we will help you set it up when you register.)