My new computer is dying. There are three fans in it: one on the CPU, one on the video card, and one for the motherboard’s chipset (NVIDIA nForce4). A month ago a loud buzzing sound started emanating from the computer case, sounding like a big-ass bee stuck in a glass jar; and then a few days later the computer froze with the BIOS message: Chip fan is running at a low, unsafe speed. I turned it off then back on, and the buzzing went away.
The buzzing came back today. This time I took the case apart and good clearly see the cooling fan for the nForce4 chip was spinning irregularly, almost stopping every second; and it’s loud; annoyingly loud.
I emailed ASUS, the motherboard manufacturer, the following:
The nForce4 ultra chip fan on the motherboard has recently started making a loud buzzing sound, with the BIOS giving alerts that its RPMs is low. I disabled the chip fan warning alarm, but the buzzing continues; it sounds like a loud bee stuck in a glass jar. Looking at the fan itself, it’s obvious that it isn’t spinning at a consistent rate.
I bought and installed the motherboard in May, 2005 and had no problems until this started to occur about a month ago. The system is behaving normally except for the loud buzzing sound the fan is making.
Does this require warranty work? Is there anything I can do to fix it? No changes have been made to the system since I first installed the motherboard.
I look forward to your response.
So if SWT is down, it’s probably because my PC’s motherboard has melted.
Update: ASUS sent me a free replacement motherboard in the end. See my comments below for how their excellent service dealt with the situation.
Another Update (Jan. 17, 2007): The fan failed AGAIN. It started humming loudly, and looking at it you could see it slowing down, trying to spin quickly. This time I replaced it with a heat-sink – no more damn fan to deal with.