Power-On Sequence - HP Compaq t5125 Troubleshooting Manual

Diagnostics and Troubleshooting

Power-On Sequence

4-2
IDE Flash Activity LED
LED
Off When the unit is powered on and the flash activity
light is off, then there is no access to the system flash.
Blinking Green Indicates the system is accessing the internal IDE
flash.
At power-on, the flash boot block code initializes the hardware to a
known state, then performs basic power-on diagnostic tests to
determine the integrity of the hardware. Initialization performs the
following functions:
1. Initializes CPU and memory controller.
2. Initializes VGA software.
3. Initializes and configures all PCI devices.
4. Initializes the video to a known state.
5. Initializes USB devices to a known state.
6. Performs power-on diagnostics. (For more information, see
"Power-On Diagnostic
7. The unit boots the operating system.
www.hp.com
Status
Tests".)
Troubleshooting Guide