Hello people 
When I turn my laptop on, just before the «OS is initializing» the laptop shuts down, and right after this happened I turned my laptop on again and it shuts down even more quickly. There is one thing interesting, I remove the power cable and I put it back again and I start my laptop and it goes to the «OS is initializing» and then it shuts down again and I turn on again and it shuts down even more quickly again. So what I do to start the laptop is to remove the power cable and put it back again and then I turn my laptop on and I press F2 for boot menu and then I stay there for at least 10 minutes doing nothing and then I leave the boot menu pressing the discard changes or save changes and then with this way I can «enter» so to speak, to my laptop. I know it's confusing, believe me, I'm really confused as well. I don't think its overheat because it is clean,the thermical paste is on and I use a software to see the temperatures (Speedfan for example).
I hope someone can help me with this.