I
Isaac Grover
Hi everyone,
Over the last month or so, I have acquired four different ATX
motherboards, no two are the same model or brand, and three have come
with their own power supply, but they are all showing the same
symptoms.
To cut down on the sources of problems on the systems, I have only
connected the power supply to the motherboard and to a case fan to
verify power, no other drives or peripherals are connected to the
power supply. When power is applied to the system, the power supply
and the case fan will power up momentarily and shut down. When the
PWR jumper on the motherboard is shorted, the power supply and case
fan power up and stay powered on, but the motherboard shows no signs
of life - the fan on the CPU won't start up, no PC speaker beeping, no
video to the monitor. All the motherboards have an ISA slot, and I
have a ISA POST card I use to troubleshoot motherboards, but the
information I'm getting from the POST card is that there is power to
the ISA slot the POST card is in, but the motherboard doesn't even
boot to the BIOS stage.
Has anyone here ever seen this happen before, and what did you find to
be the cause?
Thanks,
Isaac
Over the last month or so, I have acquired four different ATX
motherboards, no two are the same model or brand, and three have come
with their own power supply, but they are all showing the same
symptoms.
To cut down on the sources of problems on the systems, I have only
connected the power supply to the motherboard and to a case fan to
verify power, no other drives or peripherals are connected to the
power supply. When power is applied to the system, the power supply
and the case fan will power up momentarily and shut down. When the
PWR jumper on the motherboard is shorted, the power supply and case
fan power up and stay powered on, but the motherboard shows no signs
of life - the fan on the CPU won't start up, no PC speaker beeping, no
video to the monitor. All the motherboards have an ISA slot, and I
have a ISA POST card I use to troubleshoot motherboards, but the
information I'm getting from the POST card is that there is power to
the ISA slot the POST card is in, but the motherboard doesn't even
boot to the BIOS stage.
Has anyone here ever seen this happen before, and what did you find to
be the cause?
Thanks,
Isaac