Since buying an X670E-A motherboard 1.5 months ago and assembling my PC, I've had nothing but issues since the very first power-on of the system, when it wouldn't post until I removed the CMOS battery, the power cable, and held down the PC case power switch to drain any other caps, and then put it all back together.
After that it would post, but the same issue of it not posting returns any time I make a BIOS change in Ryzen Master that requires a system restart, such as simply clicking the button to reset the settings to their defaults. And then I have to go through the process of removing the CMOS battery, the power cable, and held down the PC case power switch to drain any other caps, and then put it all back together.
But that isn't the only issue. Setting temperature and thermal limits in the BIOS has no effect whatsoever. But I can change them in Ryzen Master.
Additionally, most frustrating of all, is that the system restarts randomly around once per day, though something less than once per day, and sometimes more than once per day. The longest it has gone without randomly restarting was for four days, which it just did this week, until it randomly restarted twice yesterday. After these random restarts happen, a lot of the time the screen will display normally, but sometimes picture won't be output to the monitor, though I'll still hear the Windows login-screen chime. Sometimes, the screen will flash between dark-grey and black. And when the display isn't outputting to the monitor, I need to power off the PC at the PSU, and then power it back on - simply pressing the reset button on the PC case won't clear the issue.
I've been in contact with Asus Support about it since February 15 (I could've still returned the mobo to the store then, but not now). Responses have been slow and not really moving things forward. They did finally offer an RMA on March 4, though I'm still awaiting a follow-up email with the instructions I need to follow to do the RMA.
And I've just encountered another issue with the motherboard, which is that I can't get it to connect to any devices via Bluetooth. My Bluetooth devices all connect to each other just fine, and I've done lots of troubleshooting with Bluetooth on my PC, but I haven't gotten it to connect a single time to a device.
Just about every time I enable Bluetooth in Windows 11 and search for nearby devices, the Bluetooth device-finder doesn't identify any nearby Bluetooth devices. It did twice successfully identify nearby devices, and one time successfully paired with my phone, which it took far too long to do, but it hasn't been able to actually connect to it once it's paired. And every time I run the Windows 11 Bluetooth troubleshooter, it finds and "fixes" an issue of enabling Bluetooth. Yet every time I run the troubleshooter, it "fixes" the same issue over and over, of enabling Bluetooth. And I've tried un-checking the box that lets Windows disable Bluetooth to save energy, but that didn't help.
I'm wondering if something is damaged on the motherboard that is the source for all of these issues.
Video demonstrations of the first 3 issues I mentioned (setting thermal and power limits in BIOS don't work, and making changes to BIOS via Ryzen Master make the system unable to post), which I sent to Asus support in my emails, are here:
Setting a temperature limit in the BIOS doesn't work: https://youtu.be/RanSk-B2tzg
Setting a thermal limit in the BIOS doesn't work: https://youtu.be/RnvoKJWQFjU
Resetting BIOS to default in Ryzen Master causes the system to be unable to post: https://youtu.be/WNcDtJ8bhuA