2 Replies Latest reply on May 31, 2011 10:10 PM by nguyenqhien

    DP67BG - cpu fan speed rpm=0 after update BIOS 1979

    nguyenqhien

      After I updated the BIOS to the latest level (1979) and reboot the box.  I got a messages said - check the fan in the chassis -, press enter, it booted to Windows just fine, everything appears normal.

      However, I check the BIOS, the CPU fan reports RPM=0.

      Does anyone see this? WHat could be a problem here? I tried to flash back to the older BIOS but it did not take it - it said old bios black listed -

       

      Also how do I skip/ignore the check chassis message everytime I reboot.

       

      Thanks, Hien.

        • 1. Re: DP67BG - cpu fan speed rpm=0 after update BIOS 1979
          nguyenqhien

          More Data:

           

          First, my CPU fan is the Arctic Cooling Freezer 7 Pro Rev.2 .

          I run the Intel Extreme Tuning's cpu stress test, the cpu temprature gradually went up from 27c to around 67c - at that time cpu fan speed kicked in at 700rpm. I noticed that the CPU temparature stopped increase and stayed at 67-68c.

          So it looks like at boot time the fan speed is around 880rpm but the BIOS reported 0 rpm and the fan speed increase when temperature went up, but the bios only took the readout when it passed certain threshold (in this case 67c)

           

          I also tried to connect the cpu fan to the rear fan header, it did read 880rpm at boot/idle -  So just the cpu fan header that reads 0rpm at boot/idle.

           

          Hmm, I am kind of okay with this - Now if I can find a way to disable the alert message about fan has been removed and check your chassis. Anyone knows how?

           

          Thanks, Hien.

          • 2. Re: DP67BG - cpu fan speed rpm=0 after update BIOS 1979
            nguyenqhien

            Update:

             

            I replaced the Arctic Cooling fan with the Cool Master Hyper 212 plus. It works beatiful now. RPM reads 780 rpm.

             

            Hien.