I tried to replace the cpu fan for my Dell precision M6700, with a new fan I bought on Amazon as my old fan is noisy and I noticed that the axis of my old fan seems loose. I have upgrade the Bios to A18 already. I have tried 2 new fans, the first one the fan didn't spin and the machine gave error message "CPU fan malfunction" and the test diagnostic result show cpu fan error code 2000-5011. Then I replace another new one, this time the new fan spin with an irregular pace and the test diagnostic result gave the 2000-5011 error code again!
Once I switch to my old noisy fan, it works just fine. Is there any solution for this? The first time I thought it was the fan that didn't work correctly, but I am doubtful that the second fan is a defected fan again.
Thank you in advance.