Preboot blinking power button codes
Power button LED state

Power Button LED State Description
Off Power is Off. LED is blank.
Blinking Amber Initial State of LED at power up. See the table below for Blinking Amber pattern diagnostic suggestions and possible failures.
Blinking White System is in a low power state, either S1 or S3. This does not indicate a fault condition.
Solid Amber The second state of the LED at power up, indicates that the POWER_GOOD signal is active and it is probable that the power supply is fine.
Solid White System is in S0 state. This is the normal power states of a functioning machine. The BIOS will turn the LED to this states to indicate it has started fetching op-codes.
Diagnostic Indicator table

State State Name Power Light: Amber Blinking Amber Blinking Pattern Problem Description Suggested Resolution
- - 2, 1 2 blinks followed by a short pause, 1 blink, long pause, then repeats Faulty System board

To troubleshoot the issue with system board, contact Tech support.

- - 2, 2 2 blinks followed by a short pause, 2 blinks, long pause, then repeats Bad system board, Power Supply or Power Supply cabling
  • If you can assist to troubleshoot, narrow down the issue with PSU BIST Test, reseat cable.
  • If nothing works, contact Tech Support
- - 2, 3 2 blinks followed by a short pause, 3 blinks, long pause, then repeats Bad system board, Memory or Processor
  • If you can assist to troubleshoot, narrow down the issue by reseating memory and swapping a known good memory if available.
  • If nothing works, contact Tech Support
- - 2, 4 2 blinks followed by a short pause, 4 blinks, long pause, then repeats Bad coin cell battery
  • If you can assist to troubleshoot, narrow down the issue by swapping a known good coin cell battery if available.
  • If nothing works, contact Tech Support
S1 RCM 2, 5 2 blinks followed by a short pause, 5 blinks, long pause, then repeats BIOS Checksum Failure
  • System is in Recovery Mode.
  • Flash latest BIOS version. If problem persists, contact Tech Support
S2 CPU 2, 6 2 blinks followed by a short pause, 6 blinks, long pause, then repeats Bad Processor
  • CPU configuration activity is in progress or a CPU failure was detected.
  • Contact Tech Support
S3 MEM 2, 7 2 blinks followed by a short pause, 7 blinks, long pause, then repeats Memory failures
  • Memory subsystem configuration activity is in progress. Appropriate memory modules were detected but a memory failure has occurred.
  • If you can assist to troubleshoot, narrow down the issue with reseating memory and swapping a known good memory if available.
  • If nothing works, contact Tech Support.
S4 PCI 3, 1 3 blinks followed by a short pause, 1 blink, long pause, then repeats PCI Device or Video subsystem failures
  • PCI device configuration activity is in progress or PCI device failure was detected.
  • If you can assist to troubleshoot, narrow down the issue by reseating PCI card and removing one by one to determine which card failed.
  • Contact Tech Support.
S5 VID 3, 2 3 blinks followed by a short pause, 2 blinks, long pause, then repeats Video Subsystem failure
  • Video subsystem configuration activity in progress or video subsystem failure.
  • If customer can assist to troubleshoot, narrow down the issue by removing one by one to determine which card failed.
  • Contact Tech Support.
S6 STO 3, 3 3 blinks followed by a short pause, 3 blinks, long pause, then repeats No Memory detected
  • If customer can assist to troubleshoot, narrow down the issue by removing the memory module one by one to determine which one failed and swapping to a known good memory if available to confirm.
  • Contact Tech Support.
S7 USB 3, 4 3 blinks followed by a short pause, 4 blinks, long pause, then repeats Storage Subsystem failure
  • Possible storage device configuration in progress or storage subsystem failure.
  • If you can assist to troubleshoot, narrow down the issue by removing the storages on motherboard to determine which one failed.
  • Contact Tech Support.
S8 MEM 3, 5 3 blinks followed by a short pause, 5 blinks, long pause, then repeats Memory configuration or incompatible error
  • Memory subsystem configuration activity is in progress. No memory modules were detected.
  • If customer can assist to troubleshoot, narrow down the issue by removing one by one the memory on motherboard to determine which one failed. Also, combining the configuration to validate appropriate combination.
  • Contact Tech Support
S9 MBF 3, 6 3 blinks followed by a short pause, 6 blinks, long pause, then repeat System board failure
  • Fatal system board failure detected.
  • If customer can assist to troubleshoot, narrow down the issue by removing one by one the component on motherboard to determine which one failed.
  • If you identified any of the components failed, replace the component.
  • Contact Tech Support
S10 MEM 3, 7 3 blinks followed by a short pause, 7 blinks, long pause, then repeats Possible memory failure
  • Memory subsystem configuration activity is in progress. Memory modules have been detected but appear to be incompatible or in an invalid configuration.
  • If customer can assist to troubleshoot, narrow down the issue by removing one by one the memory on motherboard to determine which one failed.
  • Contact Tech Support.