laptop freezes when moved (tilted)

[Kurella]

HI Guys,

Topic: Problem solved in my case (solution found!!!) 

I have found a solution to my laptop problem. In the beginning I wanted change my HDD with SSD to improve the performance and I was hoping it to fix the laptop freezing problem when moved. I updated my storage but the problem persisted. I was deeply exploring all the problems related to this specific problem (HP Envy 15t K000 being frozen when moved) on the HP community I have tried all the possible solutions being suggested and then concluded it to be either a problem with the motherboard or heatsink (referring to the T-mat's following post https://h30434.www3.hp.com/t5/Notebook-Video-Display-and-Touch/HP-Envy-15-freezes-when-moved/m-p/618..., where having thermal paste fixed the problem in his case )  (In my case I knew the problem is not related to software, as I have reinstalled a new OS and tried all the software debugs being suggested in HP community that I have tried came clean). After investing quite sometime I have accepted to live with the problem and keep using the laptop. But after thinking on the issue for a week and discussing about it with a colleague, we have concluded it most such cases it has to do something with the cooling fan, as fan is the only moving part in my entire laptop and the laptop works fine as long as its stationary. In the following weekend I have decided to clean the internal cooling fan and see if it fixes the problem (which is today). It worked!! I have tried moving the laptop, lifting it in all weird positions while in use and it does not freeze. I no longer hear a heavy cooling fan sound anymore. 

Bottom line: There was a lot of dust stuck in the metal vent adjacent to the cooling fan which I think was intervening with the cooling process, when tilted the dust made the cooling degrade even further which caused the laptop to freeze. Cleaning the laptop cooling fan, part of the laptop maintenance solved the issue. I will however keep my laptop under observation for a week, to see if it really solved the problem and update the post. If you see no further follow-up to this post from me, consider it to be a solution that worked.

Note: I have been using the laptop since 4 and half years, I started to experience the 'freeze' issue since past 4 to 5 months. 

Hope this helps someone else too. Thanks to everyone who shared their problems, ideas and solutions.