How can I check my fan status?

I want to know my fan status, change speed, etc.

I tried Speed Fan but it doesnt detect my fans, same with Hwinfo, with I8kfanGUI i cant even install it (I think because of incompatibility).

I read something of some dells have a "secret menu " called a a Thermal Control Panel where you can see your fan status and change its speed, you can access this menu by doing this:

- Press FN + Shift button
- While pressing those buttons press 1, 5, 3, 2, 4
- Release FN and Shift
- Press FN + R

But it doesnt work, any ideas?

Thanks!