I have recently built an i7 rig with the UD4P, and I have discovered the source of my reboot issue, but would like further confirmation from anyone more technically inclined or knowledgeable to determine if this is an RMA requiring issue, or if this will be fixed by a future BIOS update.
My motherboard will power cycle upon booting, repeatedly restarting until at some point it'll stay off, or it'll stay on and warn me about overclocking voltages. However, this is a red herring, as I have discovered that the cause of my rebooting is the front panel header circuitry. If I remove the front header connectors after the system boots, the system will not reboot or continue power cycling. It boots, and it stays booted. If I plug the switch connector back in (either reset or power switch, into either location on the header) I can expect the system to reboot shortly.
I tested my power switches with a multimeter, and there is no circuit unless they are depressed. As soon as they are depressed, I get a small amount of resistance on each. The case is an Antec Nine Hundred Two, and I have already submitted a spare part request for a power switch, however I highly suspect, given the multimeter results, that this problem is inherent to something the motherboard is doing with the front panel header.
Occam's Razor asks me whether the simplest explanation is that both the power and reset switches on my case are bad, despite a multimeter determining they are wired correctly, or if the front panel or the bios is incorrectly reading a circuit when there is none.
The issue perplexes me. The multimeter correctly determines the resistance along the line when the switch is depressed, and shows no connection when not. I don't understand, personally, how connecting the switches to the motherboard could cause the motherboard to "read" anything different. But there's no question whatsoever: plug the power switch or reset switch into either the power or rest pins on the header... and I encounter boot issues. Immediately.
Edit: I should add that I do not think it is an issue with grounding, as the system will do a cold boot if I plug a switch into the power header.
My motherboard will power cycle upon booting, repeatedly restarting until at some point it'll stay off, or it'll stay on and warn me about overclocking voltages. However, this is a red herring, as I have discovered that the cause of my rebooting is the front panel header circuitry. If I remove the front header connectors after the system boots, the system will not reboot or continue power cycling. It boots, and it stays booted. If I plug the switch connector back in (either reset or power switch, into either location on the header) I can expect the system to reboot shortly.
I tested my power switches with a multimeter, and there is no circuit unless they are depressed. As soon as they are depressed, I get a small amount of resistance on each. The case is an Antec Nine Hundred Two, and I have already submitted a spare part request for a power switch, however I highly suspect, given the multimeter results, that this problem is inherent to something the motherboard is doing with the front panel header.
Occam's Razor asks me whether the simplest explanation is that both the power and reset switches on my case are bad, despite a multimeter determining they are wired correctly, or if the front panel or the bios is incorrectly reading a circuit when there is none.
The issue perplexes me. The multimeter correctly determines the resistance along the line when the switch is depressed, and shows no connection when not. I don't understand, personally, how connecting the switches to the motherboard could cause the motherboard to "read" anything different. But there's no question whatsoever: plug the power switch or reset switch into either the power or rest pins on the header... and I encounter boot issues. Immediately.
Edit: I should add that I do not think it is an issue with grounding, as the system will do a cold boot if I plug a switch into the power header.
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