Computer Is Dead

[autumnal]

When I push the power button, nothing turns on.

I replaced the power supply, didn't help.

I replaced the video card, didn't help.

I checked the motherboard for visable capacitor rupture. None.

I reseated the memory stick, didn't help.

I changed out the hard drive, didn't help.

System not overclocked and was not overheating at the time of failure.

Has anyone had this problem before? If so, please give me some
advice.

Thanks in advance for helpful suggestions.


System:

Abit NF7-S Motherboard
Athlon 2500+ Mobile CPU
Kingston Memory

 

[peter]

have you checked the power button.........pull the connector off the mobo
and using a screwdriver with plastic/insulated handle short the 2 pins on
the mobo together.
If it starts is the switch on the case.
peter

 

[Paul]

have you checked the power button.........pull the connector off the mobo
and using a screwdriver with plastic/insulated handle short the 2 pins on
the mobo together.
If it starts is the switch on the case.
peter

You can also swap the reset and power cables, and use the reset button
to test the power on/off response.

Paul

 

[the_slay_er]

wouldnt the op be better starting right at the very first most obvious
culprit and work from there?

go to the power outlet... pull the plug............check fues / wires etc.

then check cable to see if power is travelling along it.

then power supply fuse inside that..

then onto the switch etc etc

regards dave and katie the dbox and starview people in the uk !
http://www.dbox2repair.co.uk/
for all your dbox2 needs
we guarantee our work and only offer the highest standards.


..

 

[Paul]

wouldnt the op be better starting right at the very first most obvious
culprit and work from there?

go to the power outlet... pull the plug............check fues / wires etc.

then check cable to see if power is travelling along it.

then power supply fuse inside that..

then onto the switch etc etc

regards dave and katie the dbox and starview people in the uk !
http://www.dbox2repair.co.uk/
for all your dbox2 needs
we guarantee our work and only offer the highest standards.

My comment was with regard to using the screwdriver tip, as a
replacement for the switch. You can use the reset and power
switches interchangeably, which means no dangers from the
screwdriver tip hitting something else.

On some motherboards, there is a green LED connected to +5VSB.
Seeing a LED like that glowing, tells you a bunch of stuff is
OK.

Looking at the Abit manual for NF7-S, there are two LEDs near
the panel header. LED1 is labeled 5VSB and should glow as soon
as the switch on the back of the computer is turned on.
LED2 is connected to +5V, and that one lights when the computer
is receiving the rest of the rails, typically after pressing
the power button. If neither LED glows, then I'd spend some more
"quality time" with the PSU.

http://www.uabit.com/downloads/manual/english/nf7_series.zip

Paul

 

[autumnal]

My comment was with regard to using the screwdriver tip, as a
replacement for the switch. You can use the reset and power
switches interchangeably, which means no dangers from the
screwdriver tip hitting something else.

On some motherboards, there is a green LED connected to +5VSB.
Seeing a LED like that glowing, tells you a bunch of stuff is
OK.

Looking at the Abit manual for NF7-S, there are two LEDs near
the panel header. LED1 is labeled 5VSB and should glow as soon
as the switch on the back of the computer is turned on.
LED2 is connected to +5V, and that one lights when the computer
is receiving the rest of the rails, typically after pressing
the power button. If neither LED glows, then I'd spend some more
"quality time" with the PSU.

http://www.uabit.com/downloads/manual/english/nf7_series.zip

Paul

You guys were right on target. It was the power switch.

I transferred the whole system to another case and it booted up
perfectly.

I sure am happy to recover that Athlon Mobile CPU. It overclocks to
2.5 Gig with no problem.

Thanks for your help.

 

[DaveW]

Your motherboard has most likely died. Capacitor rupture is not necessary
for it to fail.

 

[ProfGene]

When I push the power button, nothing turns on.

I replaced the power supply, didn't help.

I replaced the video card, didn't help.

I checked the motherboard for visable capacitor rupture. None.

I reseated the memory stick, didn't help.

I changed out the hard drive, didn't help.

System not overclocked and was not overheating at the time of failure.

Has anyone had this problem before? If so, please give me some
advice.

Thanks in advance for helpful suggestions.


System:

Abit NF7-S Motherboard
Athlon 2500+ Mobile CPU
Kingston Memory

Although it is not certain it is the MB a motherboard can be dead
without any visible signs of damage if there was a short for instance.
It can also be the processor. I have had both happen.