Hello ennaid
Looks like there is heating problem and cleaning the CPU fan may resolve the issue. However, before you go ahead and disassemble your laptop, what I would suggest is, do a hard reset. To do so:
> Unplug the power adapter.
> Pull out the laptop's battery.
> Press and hold down the Power button for 45-60 seconds.
> Release the Power button.
> Put the battery back in the laptop and try starting it this time.
Some useful information can also be found
here.
If the above methods fail, you may want to open the back cover of the laptop and wipe off all the dust from the CPU fan.
Hope this helps.
Do not hesitate to come back if further assistance is needed.
