Troubleshooting LED & Beep Codes

January 20, 2021

Applies to

  • VIO Server Family
    • VIO Lite / VIO 2 / VIO 4 / CG
    • Live 350
    • VOD Lite / VOD-10


LED Codes

These are lights on the front of your server, next to the reset and power switch. These lights can give you information on your server at a quick glance.

Power LED

This LED light has a lightning bolt symbol with a cross through it.

  • Lit Steady Red: System may be running with only one of two power-supply blades. Check to ensure both Power-supply blades are secured in the back.
  • Lit Steady Red & Continuous Tone: A power-supply blade may have failed. Check the back of the server for a Red LED Light on the failed blade. This will need to be replaced.

Exclamation Point LED

This light gives you information about the cooling of your server.

  • Off: Normal Operation, all is good.
  • Steady On: Overheat and/or Redundant Power Supply Problem
  • Flashing: Fan Failure

If you have a steady lit LED, ensure the room the server in is properly cooled, and that there is no cables or other obstructions to the back of the server, ensuring proper air-flow.
If cooling is not a problem, it may be one of the redundant power supplies.

If you have a flashing LED, please contact support.

Ethernet LEDs

Two LAN ports (LAN1, LAN2) are located on the back I/O panel of VIO Hardware. Each Ethernet LAN port has two LEDs. The yellow LED indicates activity, while the other Link LED may be green, amber, or off to indicate the speed of the connection. Refer to the tables below for more information.

LAN Activity LED (Right)


ColorDefinitionOffNo Connection / 10mbpsAmber1 GbpsGreen100 Mbps

Beep Codes

During the POST (Power-On Self-Test) routines, which are performed each time the system
is powered on, errors may occur:

  • Non-fatal errors are those which, in most cases, allow the system to continue the bootup
    process. The error messages normally appear on the screen.
  • Fatal errors are those which will not allow the system to continue the bootup procedure. If
    a fatal error occurs, you should consult with your system manufacturer for possible repairs.
    These fatal errors are usually communicated through a series of audible beeps.

The table shown below lists some common errors and their corresponding beep codes encountered
by users.

Beep CodeError MessageDescription/Notes1 beepRefresh (Normal)Circuits have been reset (Ready to power up)5 short, 1 longMemory ErrorNo memory detected in system    1 long continuousSystem OverheatSystem overheat condition    1 long continuousRedundant PowerOne of the redundant power supplies aren't powered

Redundant Power Beep Tone

If your system has redundant power supplies (two power supplies at the back), this could be reason for a single continuous "problem" beep tone. You can diagnose this by checking the LED on the power supplies. If the power supply LED is lit, then the power supply is in good powered status. If the power supply is powered with a known good cable and is not lit, the power supply has likely failed, and needs replacement.

You can silence a power supply error beep by removing one of the "power supply blades" from the back of the server.

The AMI BIOS supplies additional checkpoint codes, which are documented online at ("AMI BIOS POST Codes User's Guide").


Additional information and troubleshooting steps can be found in the X11 motherboard manual, found here: