I'm puzzled by the behavior of the integrated network port on an IBM ThinkCentre S50 Motherboard.
I got this PC from people selling them as an office equipment clearance.
When I powered it ON, it boots straight into WindowXp without problem or any error message. However, there is no network available. No network adapter appears in PC hardware manager list also. I then power down and enter BIOS screen, noting that the on-board ethernet controller option has been disabled. So I thought it would be a piece of cake just to turn it back on and save back the new setting to CMOS. I'm home and dry.
On power up again, POST immediately reports an error message 1806 on PCI/PnP resources conflict. It clearly states that it is caused by the motherboard ethernet controller. Thinking that it could be a driver problem I then proceed to boot into XP and note the yellow exclamation mark on the network adaptor saying software for the device has not been installed. Fine I go ahead and installed the correct driver. Installation completed successfully and OS requested a system reset.
After a reboot, still the same POST resource conflict error message and inside device manager the yellow exclamation mark on the network adapter is still showing. However, this time the problem is that Window cannot start the device(probably because of the hardware resource conflict).
I then went back into BIOS and disable the ethernet controller and verified again the resource conflict message has disappeared. I powered down the PC again and installed a separate PCI network card. To my surprise, the POST immediately reports that the new PCI network card I have just inserted also caused resource conflict.
Finally inside BIOS I disable the sound card and all the COM and parallel port to free up some resources but the error remains. I have fully discharged the CMOS, loaded the system defaults and even upgraded the BIOS versions to the latest version to no avail.
How can integrated peripherals on a motherboard cause resource conflicts among themselves? Obviously one can't move them into different slots to resolve the problem like cards on PCI slots.
What could be the problem? What other options do I have?
I got this PC from people selling them as an office equipment clearance.
When I powered it ON, it boots straight into WindowXp without problem or any error message. However, there is no network available. No network adapter appears in PC hardware manager list also. I then power down and enter BIOS screen, noting that the on-board ethernet controller option has been disabled. So I thought it would be a piece of cake just to turn it back on and save back the new setting to CMOS. I'm home and dry.
On power up again, POST immediately reports an error message 1806 on PCI/PnP resources conflict. It clearly states that it is caused by the motherboard ethernet controller. Thinking that it could be a driver problem I then proceed to boot into XP and note the yellow exclamation mark on the network adaptor saying software for the device has not been installed. Fine I go ahead and installed the correct driver. Installation completed successfully and OS requested a system reset.
After a reboot, still the same POST resource conflict error message and inside device manager the yellow exclamation mark on the network adapter is still showing. However, this time the problem is that Window cannot start the device(probably because of the hardware resource conflict).
I then went back into BIOS and disable the ethernet controller and verified again the resource conflict message has disappeared. I powered down the PC again and installed a separate PCI network card. To my surprise, the POST immediately reports that the new PCI network card I have just inserted also caused resource conflict.
Finally inside BIOS I disable the sound card and all the COM and parallel port to free up some resources but the error remains. I have fully discharged the CMOS, loaded the system defaults and even upgraded the BIOS versions to the latest version to no avail.
How can integrated peripherals on a motherboard cause resource conflicts among themselves? Obviously one can't move them into different slots to resolve the problem like cards on PCI slots.
What could be the problem? What other options do I have?