andrewww

BIOS roll-back has resolved the problem. Still would love to know why I cant use latest BIOS though.

So I just updated my bios to the latest revision and it will no longer boot into my PCI drive (OS) or into my BIOS. I take the drive out, and I can boot into BIOS just fine, but with it in, I just get "Entering Setup" in the bottom left and never any further. It comes with an A0 post code as well. I will be rolling back the BIOS but I would really like to know why this is happening. MSI Z370 Gaming 5 Plextor PCIe NVMe 256GB 8700k 32gb Crucial GTX 1080ti

Thank you everyone for your input.A little update, I am now on the replacement Asus board. I have a working computer with one weird quirk still plaguing my system. When my computer goes to sleep or is shut down, Everything on the board is unresponsive. Power button, reset switch, clear cmos, and switching the power supply on and off do nothing. The system appears just like my aforementioned problem. The difference comes when I unplug the Display Port cable that runs to my ASUS monitor. As soon as it is unplugged the system will boot into the recovery mode that displays the board was shut down due to a surge in power from the PSU. Then it forces me into the BIOS and I can enter my OS from there. The system only behaves in this way when the ASUS monitor is plugged in. I can sleep and shut down normally with it unplugged. It is a minor inconvenience to have to unplug the cable every time I have to shut down, but it would still be nice to know if this could be caused by the PSU or faulty monitor. Any help or guidance appreciated.Thanks

I did not know they did a diagnostic. Thanks for that info. Its just super time sensitive, my livelihood comes from my computer and waiting a week for a return and replacement wasnt in the cards. I had no clue that it would brick another motherboard in the exact same way. Thanks for your help though. No other forum site has given me the time of day.

I dont think a replacement motherboard will solve the issue.. Two of them have failed in the exact same way. I use the machine normally, leave, comp goes to sleep then motherboard inexplicably fails. They have completely failed the same way with two different motherboard models. I need my computer for work so I dont have time to order parts one by one to find the problem. Could the power draw be the problem be caused by a fault in the power supply?

I have moved everything to a test bed and it still wont turn on. No signal of any kind. The motherboard will not even respond to the power switch. It is fried. I just need to know what could be causing this, since nothing in the actual system has changed. The only thing different is that I now have a third monitor.

yes.

nope, CX650M. All components were carried over from build to build except the motherboard changed. They system worked again till it went to sleep.

Hello all, I have come here at last resort, before I go completely insane. COMP COMPONENTS: Gigabyte G170N Gaming 5, i7 6700k, 250gb 850 evo, Corsair 650, CM 212evo, GTX 1080 Strix, 32gb Crucial Ballistix Sport. Periphs: Logitech C922x, MechanicalEagle Z-77, Gmyle Compact, Dell U3415W, LG 27UD68-P, MX Master, G602 My Rig had been working for 3 months before last Wednesday. I received my refurbished Asus PG279Q and got everything set up. I played games, used Premiere, and everything was stable. Left to run some errands, came back and attempted to wake the computer. Nothing. I took all the normal troubleshooting steps to isolate the problem (Remove periphs, Clear CMOS, try on-board graphics). All with no signal. I determined that my MoBo must have gotten a surge or just randomly cooked so ordered an ASUS B150I PRO. It arrived in the mail today and was installed. Everything worked fine, I played games and had a smooth experience. Left to do some errands, came back, attempt to wake from sleep and NOTHING. The Gigabyte mobo would at least spin up fans but this ASUS literally does nothing. I have tried all default troubleshooting steps, NOTHING. NO FANS, NO LIGHTS, NOTHING. What is causing my MoBos to brick? The only thing that changed was the addition on my ASUS monitor. Could it be the usb hub in the monitor shorting something out? If so, why does it need to go to sleep before bricking? I am just at a loss, nothing makes sense, and any advice or direction would be appreciated. Thanks, Andrew