HP Compaq Evo N1010v Series Service Manual page 115

Beep Codes
1-2-1-2
1-2-1-3
1-2-1-4
1-2-2-1
1-2-2-3
1-2-2-4
1-2-3-1
1-2-3-3
1-2-4-1
1-3-1-1
1-3-1-3
1-3-2-1
1-3-3-1
1-3-3-2
1-3-3-3
1-3-4-1
1-3-4-3
1-3-4-4
1-4-1-1
1-4-1-3
1-4-1-4
1-4-2-3
1-4-3-1
1-4-3-3
1-4-4-1
1-4-4-2
2-1-1-2
2-1-1-3
2-1-2-2
2-1-2-3
2-1-2-4
2-1-3-1
2-1-3-2
2-1-3-3
2-1-3-4
2-1-4-1
2-1-4-3
Service Manual
POST Description
Load alternate registers with initial POST values
Restore CPU control word during warm boot
Initialize PCI Bus Mastering devices
Initialize keyboard controller
BIOS ROM checksum
Initialize cache before memory Auto size
8254 timer initialization
8237 DMA controller initialization
Reset Programmable Interrupt Controller
Test DRAM refresh
Test 8742 Keyboard Controller (on motherboard)
Set ES segment register to 4 GB
Auto size DRAM; or wrong type or no RAM installed
Initialize POST Memory Manager
Clear 512 KB base RAM
RAM failure on address line xxxx
RAM failure on data bits xxxx of low byte of memory bus
Enable cache before system BIOS shadow
RAM failure on data bits xxxx of high byte of memory bus
Test CPU bus-clock frequency
Initialize Phoenix Dispatch Manager
Warm start shut down
Shadow system BIOS ROM
Auto size cache
Advanced configuration of chipset registers
Load alternate registers with CMOS values
Initialize extended memory for ROMPilot
Initialize interrupt vectors
POST device initialization
Check ROM copyright notice
Initialize I20 support
Check video configuration against CMOS
Initialize PCI bus and devices
Initialize all video adapters in system
QuietBoot start (optional)
Shadow video BIOS ROM
Display BIOS copyright notice
Troubleshooting and Diagnostics 3-23