Filter
Top Products
CHAPTER 6: Troubleshooting
78
ACPI runtime checkpoints
ACPI checkpoints are displayed when an ACPI-capable operating system either enters or leaves
a sleep state. The following table describes the types of checkpoints that may occur during ACPI
sleep or wake events:
BIOS
The settings in the BIOS Setup utility are not retained
• Replace the CMOS battery. For instructions, see “Replacing the CMOS battery” on page 51.
Optical drive
Your server does not recognize an optical drive
• Restart your server, then press F2 at any time after you see the LEDs on your keyboard flash
or turn off. Make sure that the IDE controllers are enabled. For more information, see “Using
the BIOS Setup Utility” on page 55.
• Reinstall the device driver. For instructions, see Using Your Server Companion DVD.
• Make sure that the drive is configured correctly by following the instructions in the drive’s
documentation.
• Turn off your server, then remove the drive and push it in again to make sure the drive is
seated correctly. For instructions, see “Removing and installing an optical drive” on page 31.
Your optical drive tray does not open
• Press a straightened paper clip wire into the optical drive’s manual eject hole. The drive
tray opens.
• If this problem happens frequently while the server is turned on, the drive may be defective.
Expansion cards
Your server does not recognize an expansion card
• Restart your server.
• Make sure that you have installed the necessary software or driver. For instructions, see
the card’s documentation.
• Reseat the expansion card and riser card. For instructions, see “Installing and removing PCI
expansion cards” on page 39.
Hard drive
The hard drive cannot be accessed, or you receive a “General failure reading drive C” error
message
• If a diskette is in the diskette drive, eject it and restart your server by pressing the reset
button.
• Restart your server by pressing the reset button.
Checkpoint Description
AC First ASL checkpoint. Indicates that the system is running in
ACPI mode.
AA System is running in APIC mode.
01, 02, 03, 04, 05 Entering sleep state S1, S2, S3, S4, or S5.
10, 20, 30, 40, 50 Waking from sleep state S1, S2, S3, S4, or S5.