CPU model 55C appears in BIOS but your AIO fails to power up.
CPU model 55C appears in BIOS but your AIO fails to power up.
In my BIOS I see -55°C, so the AIO isn't powering on and it’s keeping my CPU from heating up. That’s also a relief. I’ve tried changing the thermal paste—it helps for a few hours. Updated the BIOS, installed a new cooler and air, but the CPU keeps showing -55°C in Windows 10/11. RAM is being swapped, but still nothing. It’s really frustrating.
If the CPU operates at -55°C, there are more serious concerns than just the AIO failing to power on. It’s likely the temperature sensor is faulty, or if you meant 55°C, that’s not unusually high for BIOS settings. CPUs often run at higher voltages in BIOS compared to Windows, so elevated BIOS temperatures aren’t uncommon. Your system shutting down might stem from something else. The AIO could still work, and identifying the exact model would help if it tends to develop sludge-like fluid. If the CPU were dead, you’d expect a gradual rise in temperature—around 1-2°C every 10 seconds—in BIOS, not a static reading. This suggests another underlying problem.
The concern seems related to an AIO and its cooling system. Could you share more specifics? Also, what happens when the machine shuts down?
It shows -55°C in BIOS but HWmonitor displays normal readings. Plugging my AIO into a fan header on my PC works fine, so the issue seems to be with the hardware. I’m concerned something is wrong and might need to return the board. Thanks!
No action is being taken, it occurs immediately after the PC powers on. It might be best to follow the advice given and proceed with a return of the item.