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Aspire Z3760 / Z3761 / Z5760 / Z5761 AIO Computer Service Guide
DIM Code Checkpoints
The Device Initialization Manager (DIM) gets control at various times during BIOS POST to initialize different
system busses. The following table describes the main checkpoints where the DIM module is accessed.
POST Error Indicators
When a system error is detected during POST (Power On Self Text), the Setup utility will switch to diagnostic
mode and will either:
•
Displays a POST error message, or
•
Emits a series of beep codes
POST Error Messages
POST error messages tell users what failure the system has detected. Some error messages could be related
to a hardware device. Others may indicate a problem with a device configuration. In some cases an error
message may include recommendations for troubleshooting or require that you press the
Enter
key to display
recommendations. Follow the instructions on the screen. It is recommended that you correct the error before
proceeding, even if the computer appears to boot successfully.
Checkpoint
Description
2A
Initialize different buses and perform the following functions: Reset, Detect, and Disable
(function 0); Static Device Initialization (function 1); Boot Output Device Initialization
(function 2). Function 0 disables all device nodes, PCI devices, and PnP ISA cards. It also
assigns PCI bus numbers. Function 1 initializes all static devices that include manual
configured onboard peripherals, memory and I/O decode windows in PCI-PCI bridges,
and noncompliant PCI devices. Static resources are also reserved. Function 2 searches
for and initializes any PnP, PCI, or AGP video devices.
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Initialize different buses and perform the following functions: Boot Input Device
Initialization (function 3); IPL Device Initialization (function 4); General Device Initialization
(function 5). Function 3 searches for and configures PCI input devices and detects if
system has standard keyboard controller. Function 4 searches for and configures all PnP
and PCI boot devices. Function 5 configures all onboard peripherals that are set to an
automatic configuration and configures all remaining PnP and PCI devices.
IMPORTANT
If your system fails after you make changes in the Setup menus, reboot the computer, enter
Setup again and load Setup defaults to correct the error.
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