Error detected in CPU identification.
Error detected in CPU identification.
I just finished assembling my first custom loop configuration, and everything appears to function properly. However, during startup I encountered a CPU fan detection error. My motherboard shows multiple connectors, but all are 4-pin, while my CPU cooler uses a 3-pin design. The BIOS lists the current location as “CPU_OV ADD GEN2_1.” Motherboard model is Asus Z790-E. Temperatures began around 47°C and have been climbing steadily in the BIOS as I left it running—reaching about 57°C at the last check. I was anticipating a gradual rise but this increase feels significant, especially given the voltage readings I’ve observed (around 1.305V for an i9 13900K). I’ve attached photos of the connector and its placement. I’m unsure what other slots could accommodate this setup since the headers have four pins. Any advice would be greatly appreciated.
I'm not sure about that plug or water cooling setup. On my motherboard, the pump header matches all fan headers, but that's not the case here. If the problem is with CPU fan detection, you might try connecting a generic fan to the CPU fan port.
You've done your homework and it looks like the connector you're using isn't the standard one for controlling the cooler. The description points to a specific RGB header designed for the D-RGB 3 Pin Connector, which might not be compatible with your setup. After trying to fix it by cutting the plastic casing, it still doesn’t seem to fit. While testing, your CPU reached 65°C in about 20 minutes after starting from around 40°C. Even though you have a water block and the system runs normally otherwise, the temperature readings suggest the cooler isn't cooling properly. Since no operating system is installed, it's hard to diagnose further. Could you double-check if there are any other cables or adapters you might be missing? Your i9 13900K CPU model is confirmed.
I'm curious about your setup. It looks like you have a waterblock with RGB lights, but we're focusing on the actual components. Do you have a pump for water circulation, fans attached to a radiator for cooling, and any other water-related parts? Edited June 16, 2023 by leclod
Sure, I own a large 360 radiator paired with three fans, and another smaller one with two fans, both linked together with spinning fans. My pump also runs, circulating coolant through the whole system. All temperatures are normal except for the CPU. I checked that cable only because it was the sole connection to the waterblock, thinking the issue might be there.
You found a workaround by accidentally discovering the problem. The cooling system didn’t behave as expected because the pump was the main factor, not the water block. The fan RPM adjustments seemed to work with other fans but not with the bigger set, which had radiators. After disconnecting the RGB, PWM functioned properly again. I still don’t understand why the RGB interferes with PWM despite working normally otherwise. My system runs without issues except for XMP support. I checked various tips and settings—changing voltage, profiles, or components didn’t resolve the issue. My RAM is a Kingston 6000 MTs DDR5 64GB, which works fine without XMP. I’d appreciate any advice on the XMP feature. Thanks for your assistance!