Issue with Asus motherboard.
Issue with Asus motherboard.
I'm looking for any suggestions on this. I have an Asus ROG Maximus Z690 Formula. Put it together last December. Have not opened the case since. Absolutely zero problems. Asus has been sending out monthly BIOS updates pretty much this whole time (this motherboard was release last November). Over the weekend I updated to the latest BIOS. Since then, after shutting the computer down via OS the computer will not reboot. Pressing the case power button gives an audible "click" and the fans are given a slight kick, but nothing after that. Push the button again, same thing. But here's the part I don't get. If I now shut the power off at the power supply, let the case stand for a few seconds, then turn the power supply back on - then pressing the power button on the case and the computer starts right up. I have absolutely no evidence the motherboard isn't otherwise working exactly perfectly. At Asus' suggestion I flashed again (and again and again). No fix. The fact that shutting the power supply off and on again fixes the problem makes me assume that it has to somehow be related to something that is being saved in volatile memory that is only cleared when the power supply is shut off that the new boot firmware is reading and halting on. Of course, after flashing the BIOS didn't fix it Asus wants me to RMA the board. They're not sending me a replacement in the meantime. They just want me to tear my computer down for weeks and hope they return my board quickly. I work from home on this computer. I have other options, but this computer has licenses I need for work, etc. I was just wondering if, based on the information, anyone had any suggestions for something to try. I should add that the Intel Management Engine was updated at the same time, so it is not clear which of the two (or if it's the combination) that is causing the problem, but I am just looking for any ideas. Thanks! 20220919_095121.mp4
The fans' timing and stopping patterns indicate a possible PSU problem, likely due to weak capacitors.
Actually, the fans never start going after a time or two. Please check the video again. I can click until the cows come home and it's never going to boot. That's the behavior after shutting the PC down via OS and then trying to reboot. The only thing that works is shutting the power supply off, waiting a few seconds, then turning the power supply back on. Then the case button works as expected - starts on first click every time. Shut it down again, same thing. For the XMP question - I have the board running completely stock. I am doing absolutely no overclocking, no tweaking, no nothing. This is a 100% work-from-home PC that I do no gaming on or anything like that. The CPU and RAM run at advertised frequency, etc. I closed the box up last December and it hasn't been opened since. Worked perfectly until I flashed it this last weekend and updated Intel ME. Then it did this. That makes me think it's not CMOS battery related (not to mention age) or PSU, but I will definitely try taking the CMOS battery out and clearing CMOS. Any suggestions, short of replacing the PSU, on how to test? It's an 850W PSU with an i9 12900K and 64GB Corsair memory. No video card or lan card - using the onboard Intel video and Marvell ethernet - I even have onboard wifi turned off. So no lack of power. It would have to be an actual PSU failure that was perfectly timed.
Actually, I checked and it's a ROG Thor 850W. I have a side question for anyone who might know. This is all in a MasterBox N600 and the only way I could mount the power supply means that the LED display on the side of the power supply is actually displays power, etc., upside down. If I flip it right side up then the power connectors are pressed up against a wall in the case. Is there any way to flip that display in software? Like I said - this is a work-from-home PC - and I'm in the middle of the work day. I'll try clearing the CMOS when I get a chance in the afternoon. Thanks again for all of your suggestions.
Sorry for these minor updates—I took a short break, powered it down, and reset the CMOS. I haven’t touched the battery yet. I was a bit optimistic because briefly pressing the CMOS button once shut it off, and the case button functioned that time. However, after restarting BIOS and shutting it down normally, the issue persists.
If the PSU capacitors were failing, I’d expect the case button to work intermittently. Turning off the power supply switch occasionally might help sometimes, but it seems unlikely to be the root cause.
I’ve tried replacing it about 50 times with all the fixes I attempted, but it always fails to boot from the case power button after a normal shutdown and always boots from there after cycling the PSU. It doesn’t appear to be due to bad capacitors.
If the CMOS battery is still holding, replacing the PSU seems like the next logical step.
Would the CMOS battery affect the computer's ability to boot into BIOS if settings were lost? I haven't experienced this before, but I'm going to test it to confirm or eliminate the issue. If it works, that would be great!