DIY – Repair your CPU fan.
The other day, i came rushing back home from office and found that my PC cabinet is making a rattle snake like noise. I figured out that it was the PC fan that was making these noises.
I knew the fix. Bought a 1$ Machine oil and lubricated it. Here a detailed tutorial on the same.
The first part is based on PSU fan and the second half on processor fan.
I hope this helps and do subscribe..