1,2
Bad system board, PSU or cabling
1.3
Bad system board, DIMMS or CPU
1,4
Bad coin cell battery
2,1
CPU problem
2,2
System board: BIOS ROM failure
2,3
Memory issue
2,4
Memory issue
2,5
Memory issue
2,6
System board: Chipset failure
2,7
Display failure (LCD)
3,1
RTC Power failure
3.2
PCI/video
3,3
BIOS recovery 1
3,4
BIOS recovery 2
4,1
CPU configuration or CPU failure
4,2
Generic POST video error (old LED pattern 1110)
Battery status lights
Table 7. Battery LED Behavior
Battery charge LED
Status
LED behavior
AC mode
All
White
Fully charged
Off
Battery mode
Low to Fully charged
Off
Discharging when Battery charge is
<=10%
Solid Yellow
28