- May 13, 2015
- 4
- 0
- 4,510
This build is from ~2003.
Motherboard: ASUS K8N-E DELUXE
Processor: AMD Athlon 3400+
RAM: Kingston 512mb
HDD: Western Digital
Power Supply: Thermaltake 430W
Video Card: NVIDIA 6800
It gets used a moderate amount Mostly just web browsing (became a family PC really). No kids.
Pre-text:
Powered on as normal, browse -safe- sites (HSN, JCPenney, etc).
Powered off as normal (shut down).
Went to power on 12-18 hours later, powered on via case power button, wouldn't POST, no video, wouldn't turn off.
The Issue:
Motherboard powers on by just connecting a PSU with power (no ram, cpu, video card, etc). Cannot be turned off.
I've tried the motherboard in the case, out of the case - with multiple power supplies. All power supplies tested to be good. Neither motherboard has popped capacitors or burn marks, at least not visible under hard light.
I originally bought a new power supply figuring that was the issue. No change after swapping units, which led me to get aggravated and buy a motherboard. New motherboard did the same thing with all 3 power supplies.
I've tested everything I can think of, reset the bios on both motherboards, tested psus, reseated EVERYTHING multiple times, re-greased CPU, etc.. I've also tested in different outlets around the house, no change.
Literally has blown my mind, all of my buddies are puzzled as well.
My questions:
What conditions need to be met for a power supply and a motherboard to complete a circuit (allow the power supply to turn on)?
I know BIOS is one method, and shorting the PSU independently - no effect on motherboard though. I'm curious how it is turning itself on.
Any idea what is going on / hear of anything of the sort?
Any help is appreciated - please don't paste breadboarding tips, I've already done it.. considering it's still powering on with 2 components.
Thank you for your help
Motherboard: ASUS K8N-E DELUXE
Processor: AMD Athlon 3400+
RAM: Kingston 512mb
HDD: Western Digital
Power Supply: Thermaltake 430W
Video Card: NVIDIA 6800
It gets used a moderate amount Mostly just web browsing (became a family PC really). No kids.
Pre-text:
Powered on as normal, browse -safe- sites (HSN, JCPenney, etc).
Powered off as normal (shut down).
Went to power on 12-18 hours later, powered on via case power button, wouldn't POST, no video, wouldn't turn off.
The Issue:
Motherboard powers on by just connecting a PSU with power (no ram, cpu, video card, etc). Cannot be turned off.
I've tried the motherboard in the case, out of the case - with multiple power supplies. All power supplies tested to be good. Neither motherboard has popped capacitors or burn marks, at least not visible under hard light.
I originally bought a new power supply figuring that was the issue. No change after swapping units, which led me to get aggravated and buy a motherboard. New motherboard did the same thing with all 3 power supplies.
I've tested everything I can think of, reset the bios on both motherboards, tested psus, reseated EVERYTHING multiple times, re-greased CPU, etc.. I've also tested in different outlets around the house, no change.
Literally has blown my mind, all of my buddies are puzzled as well.
My questions:
What conditions need to be met for a power supply and a motherboard to complete a circuit (allow the power supply to turn on)?
I know BIOS is one method, and shorting the PSU independently - no effect on motherboard though. I'm curious how it is turning itself on.
Any idea what is going on / hear of anything of the sort?
Any help is appreciated - please don't paste breadboarding tips, I've already done it.. considering it's still powering on with 2 components.
Thank you for your help
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