PC fails to start unless I reset the CMOS settings. Changing fan curves doesn<|pad|>,still won't work.
PC fails to start unless I reset the CMOS settings. Changing fan curves doesn<|pad|>,still won't work.
I assembled my PC and everything started up without issues, installing Windows smoothly. After a reboot, I adjusted the XMP profile and it worked just fine for a day. Once I modified the fan curves, it stopped functioning properly. The case fans were fine running at a moderate speed for adequate airflow without being too noisy. At 50% speed it sounded acceptable. Since I use headphones while working, I couldn't really notice the noise. I saved my BIOS settings and exited, but it kept prompting me to reboot. Sometimes it would take up to 45 minutes. The only solution was clearing the CMOS, then restarting with optimized defaults enabled and XMP activated. I’m puzzled why simply adjusting the fan speed caused the boot failure. The XMP was already active and everything worked normally until I changed the fans. After clearing the CMOS, it would boot with an error about verifying VMD settings when enabling Intel Optane or RAID. But the only change I made before the failure was tweaking the fan curves. XMP was enabled and booting without issues, and I wasn’t using RAID. It just wouldn’t start after only a few adjustments. It would be helpful if I could customize my fan settings more easily. It’s strange that just changing the fans was enough to trigger this problem, but that’s the only adjustment that caused it to crash. My latest build is the 12600k, Asus Prime Z690-A, Corsair 5200 MHz CL40, with an RX 6800 XT graphics card. It’s running on a 360W WD Black SSD, paired with a Samsung 860 EVO 1TB and a Samsung 870 EVO 4TB. The Windows 11 OS is installed, and I’m using a power supply from Corsair. My 6 case fans are connected via a hub with SATA power, and all four pin fans are properly plugged into their headers. The hub was connected to the Cha fan header, and I updated the BIOS to version 2204. This update had previously caused issues, but I was hoping it would resolve them.
I don't understand why it stops you from starting up. You might try using the Fan Control software, which allows you to fine-tune fan curves individually or let AI handle it. With this tool, you can manage most of your fans without needing to access BIOS settings.