Troubleshooting
ROBO-8771VG2 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 => Standard CMOS setup menu, 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.
When the above conditions happen, it is strongly recommended to check the BIOS
settings. Make sure certain items are set as they should be. These include the floppy
drive, COM1/COM2 ports, Parallel port, USB ports, external cache, on-board VGA
and Ethernet.
It is also very common that users would like to disable a certain device/port to
release IRQ resource. A few good examples are
Disable COM1 serial port to release IRQ #4
Disable COM2 serial port to release IRQ #3
Disable Parallel port to release IRQ #7
Disable PS/2 mouse to release IRQ #12,
Etc…
A quick review of the basic IRQ mapping is given below for your reference.
IRQ#
Description
IRQ #0
System Timer
IRQ #1
Keyboard
IRQ #2
Unassigned
IRQ #3
COM2
IRQ #4
COM1
IRQ #5
Unassigned
IRQ #6
Floppy Disk Controller
IRQ #7
Parallel port
