Inspiron 15 5547 Fan Issue

Hello,

I have a Dell Inspiron 15 5000 series laptop, model number 5547. A couple of days ago I noticed that the fan is not spinning by looking at the back of the laptop. So I opened up the case and cleaned the fan. There was a lot of dust stuck there which I cleaned it out and also used a blower to dish out the dust stuck within.

After putting everything back, the fan still isn't spinning. I read a lot of forums about this. Most suggest that the fan is gone and I should replace it. While in some forums I read that it can be a software (Windows) issue as well.

I did the Diagnostic test at bootup (F12), the test said everything is alright and passed. I installed SpeedFan and a few other tools. Most of them show the Fan Speed at 0 RPM.

What should I do? Should I replace the fan or is there any Windows related thing that I should be doing?

Thanks.