Troubleshooting
PEB-2771VG2A/PEB-2781VG2A User’s Manual
5-2
Loading the default optimal setting
When prompted with the main setup menu, please scroll down to “
Load Optimal
Defaults
”, press “Enter” and “Y” to load in default optimal BIOS setup. This will
force your BIOS setting back to the initial factory configuration. It is recommended to
do this so you can be sure the system is running with the BIOS setting that Portwell
has highly endorsed. As a matter of fact, users can load the default BIOS setting any
time when system appears to be unstable in boot up sequence.
Auto Detect Hard Disks
In the BIOS => Advanced, pick up any one from Primary/Secondary Master/Slave
IDE ports, and press “Enter”. Setup the selected IDE port and its access mode to
“Auto”. This will force system to automatically pick up the IDE devices that are being
connected each time system boots up.
Improper disable operation
There are too many occasions where users disable a certain device/feature in one
application through BIOS setting. These variables may not be set back to the original
values when needed. These devices/features will certainly fail to be detected.
It is also very common that users would like to disable a certain device/port to
release IRQ resource. A few good examples are
A quick review of the basic IRQ mapping is given below for your reference.
IRQ#
Description
IRQ# Default
Use
IRQ 0
System Timer
IRQ 1
Keyboard Event
IRQ 2
Usable IRQ
IRQ 3
COM2
IRQ 4
COM1
IRQ 5
Usable IRQ
IRQ 6
Diskette Event
IRQ 7
Usable IRQ
IRQ 8
Real-Time Clock
IRQ 9
Usable IRQ
IRQ 10
Usable IRQ
IRQ 11
Usable IRQ
IRQ 12
IBM Mouse Event
IRQ 13
Coprocessor Error
IRQ 14
Hard Disk Event
IRQ 15
Usable IRQ
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