So I have a fair bit of information that I'd like to share and hope to get some help with this. I have build a home server which I do a number of various things with using Unraid. I have an Epyc 7601 on an AsRock RomeD8-2T motherboard with a Be Quiet! Dark Power Pro 12 1200W power supply.
In the morning, the power at home went out. At this moment, I was currently monitoring my server through a power meter directly into the wall outlet. So no surge protector. (I know, bad.) While the power was still out, I actually unhooked this, and plugged the power cord to the server into a UPS that also offers surge protection. So when the power came back on, the server was behind a surge protector. To my understanding, when the power comes back on is when the surge would occur.
Following all of this, when I noticed the power was back on, my server would no longer turn back on, as if power was not being delivered. Which leads me to debugging for the last day. Allow me to share the symptoms and some of the odd behavior that I've noticed.
With the power supply that I currently have, the odd behavior I noticed was the green light on the motherboard that used to always be green constant. It was now powering on to brightest green, then fading away like it suddenly lost power, and then continuously doing that just over and over again. So I pulled the 24-pin from the motherboard and I jumped it. This caused all the fans and hard drives to start spinning again like power deliver was working just fine. Not satisfied that this completely absolved my power supply from failure, so I grabbed another 850w power supply that I know to work. (I double checked it on another computer and worked fine) When I plug in the known working PSU and just turn the switch on the PSU to allow power to flow, I have not hit the power button on the server yet, it tries to power up, spins the fans on the PSU and the case a little bit for half a second, then stops. Then tries again, and stops. Just power cycling constantly without actually turning the computer on.
I have removed everything from being hooked up to the point where it was -ONLY- the CPU, Motherboard, and tried both PSUs. I get the same behavior. Also tried with and without RAM. I've tried clearing the CMOS. I've removed the CMOS battery for an hour and hit the CMOS clear jumper like a madman multiple times and the same behavior. I see no damaged capacitors on the motherboard. I've ordered a PSU tester to make sure that voltage is being delivered in a clean and reliable manner, so I can try to update this posting with results tomorrow when I get the tester. I'm really really hoping that someone knows like some other things I can try to check for. I really don't want to have to buy a whole new server motherboard and Epyc CPU...they're not cheap....this thing is like a couple months old....sad day.
In the morning, the power at home went out. At this moment, I was currently monitoring my server through a power meter directly into the wall outlet. So no surge protector. (I know, bad.) While the power was still out, I actually unhooked this, and plugged the power cord to the server into a UPS that also offers surge protection. So when the power came back on, the server was behind a surge protector. To my understanding, when the power comes back on is when the surge would occur.
Following all of this, when I noticed the power was back on, my server would no longer turn back on, as if power was not being delivered. Which leads me to debugging for the last day. Allow me to share the symptoms and some of the odd behavior that I've noticed.
With the power supply that I currently have, the odd behavior I noticed was the green light on the motherboard that used to always be green constant. It was now powering on to brightest green, then fading away like it suddenly lost power, and then continuously doing that just over and over again. So I pulled the 24-pin from the motherboard and I jumped it. This caused all the fans and hard drives to start spinning again like power deliver was working just fine. Not satisfied that this completely absolved my power supply from failure, so I grabbed another 850w power supply that I know to work. (I double checked it on another computer and worked fine) When I plug in the known working PSU and just turn the switch on the PSU to allow power to flow, I have not hit the power button on the server yet, it tries to power up, spins the fans on the PSU and the case a little bit for half a second, then stops. Then tries again, and stops. Just power cycling constantly without actually turning the computer on.
I have removed everything from being hooked up to the point where it was -ONLY- the CPU, Motherboard, and tried both PSUs. I get the same behavior. Also tried with and without RAM. I've tried clearing the CMOS. I've removed the CMOS battery for an hour and hit the CMOS clear jumper like a madman multiple times and the same behavior. I see no damaged capacitors on the motherboard. I've ordered a PSU tester to make sure that voltage is being delivered in a clean and reliable manner, so I can try to update this posting with results tomorrow when I get the tester. I'm really really hoping that someone knows like some other things I can try to check for. I really don't want to have to buy a whole new server motherboard and Epyc CPU...they're not cheap....this thing is like a couple months old....sad day.