Lipservice
Senior member
Weird motherboard problem
I got a Supermicro P4SCT+II in trade. I put it together on my test table with a 3.2ghz P4 Northwood with a stock Intel HS/Fan and 2x1gb DDR400 Crucial memory. It powers up as soon as I turn on the power supply WITHOUT shorting the power ON/OFF pins. I figured ya, I've seen that before so I kind of ignored it. But it would not power off either by shorting the power ON/OFF pins (CPU fan keeps running). I decided to hook up a CD-ROM and a hard drive to see if it works otherwise. It installed Win XP Pro fine. Installed all the drivers fine. No problems. It works great. So I shut down Windows and it APPEARS to shut down OK (monitor turns off) but the CPU fan is still running. Then I hit the eject button on the CD-ROM and it ejects the Windows XP CD. The setup is still powered up! Just the monitor is off. I short the power ON/OFF pins. Nothing happens. Flip the on/off switch on the power supply to off and everything shuts down, of course. Flip the switch on the power supply switch to on and the board turns on and loads Windows.
So I have a board that works great but has an ON/OFF problem.
Things I have tried:
Different CPU/different HS/Fan/different memory/different memory slots/different power supply/flashed motherboard to the newest BIOS/tried different ACPI power schemes in the BIOS (it has for options: S1/S3/S1+S3 for options)/I even disabled ACPI and reinstalled Windows with the F7 option. Right now the Computer properties in the Device Manager is MPS Multiprocessor PC. So when you shut down it says It is now safe to turn off your computer. But it will not shut off by shorting the power ON/OFF pins. The monitor stays on/CPU fan is still running/CD-ROM ejects. Only way to shut it all off is flip the switch on the power supply.
Anyone have any ideas? I really would like to use this board as a home server. It has 6 SATA ports and would run a bunch of hard drives.
I got a Supermicro P4SCT+II in trade. I put it together on my test table with a 3.2ghz P4 Northwood with a stock Intel HS/Fan and 2x1gb DDR400 Crucial memory. It powers up as soon as I turn on the power supply WITHOUT shorting the power ON/OFF pins. I figured ya, I've seen that before so I kind of ignored it. But it would not power off either by shorting the power ON/OFF pins (CPU fan keeps running). I decided to hook up a CD-ROM and a hard drive to see if it works otherwise. It installed Win XP Pro fine. Installed all the drivers fine. No problems. It works great. So I shut down Windows and it APPEARS to shut down OK (monitor turns off) but the CPU fan is still running. Then I hit the eject button on the CD-ROM and it ejects the Windows XP CD. The setup is still powered up! Just the monitor is off. I short the power ON/OFF pins. Nothing happens. Flip the on/off switch on the power supply to off and everything shuts down, of course. Flip the switch on the power supply switch to on and the board turns on and loads Windows.
So I have a board that works great but has an ON/OFF problem.
Things I have tried:
Different CPU/different HS/Fan/different memory/different memory slots/different power supply/flashed motherboard to the newest BIOS/tried different ACPI power schemes in the BIOS (it has for options: S1/S3/S1+S3 for options)/I even disabled ACPI and reinstalled Windows with the F7 option. Right now the Computer properties in the Device Manager is MPS Multiprocessor PC. So when you shut down it says It is now safe to turn off your computer. But it will not shut off by shorting the power ON/OFF pins. The monitor stays on/CPU fan is still running/CD-ROM ejects. Only way to shut it all off is flip the switch on the power supply.
Anyone have any ideas? I really would like to use this board as a home server. It has 6 SATA ports and would run a bunch of hard drives.
