Aaeon PICO-EHL4-A11, User Manual, Page: 56 / 119

Chapter 3 – AMI BIOS Setup 42
Pico
-IT
X Bo
ar
d
PIC
O
-E
HL
4-
A11
3.1 System Test and Initialization
These routines test and initialize board hardware. If the routines encounter an error
during the tests, you will either hear a few short beeps or see an error message on the
screen. There are two kinds of errors: fatal and non-fatal. The system can usually
continue the boot up sequence with non-fatal errors.
System configuration verification
These routines check the current system configuration stored in the CMOS memory
and BIOS NVRAM. If system configuration is not found or a system configuration data
error is detected, the system will load optimized default and re-boot with this default
system configuration automatically.
There are four situations in which you will need to setup system configuration:
1. You are starting your system for the first time
2. You have changed the hardware attached to your system
3. The system configuration is reset by Clear-CMOS jumper
4. The CMOS memory has lost power and the configuration information has been
erased.
The PICO-EHL4-A11 CMOS memory has an integral lithium battery backup for data
retention. However, you will need to replace the complete unit when it finally runs
down.