POSTCODE LEDs 1 to 8 on the controller board are lit constantly
LED | Note |
|---|---|
POSTCODE 1-8 | 1. For self-diagnosis code (BIOS). 2. After the BIOS starts up, POSTCODE 4,5,7 turn off and POSTCODE 1,2,3 ,6 turn on and POSTCODE 8 blinks. POSTCODE 8 remains lit or off when there is a problem with the CPU. |
BIOS/OS | - LED is lit when the BIOS is running. - LED blinks when the OS is running. |