m16 R2, GPU fan not working after a while

Hi,

After laptop is on for a while GPU fan will just stop, even if i play with alienware command center and put it on overdrive GPU stay a 0%

after a reboot it work fine.

This is really weird.

NOTE: this happens when not gaming,(working all day) if i game all night GPU fan works as it should.

How could i go a debug this?

thank you