Hey! I have a HP Pavilion Power 15 notebook which is now about one and a half years old.
It has been sitting on a shelf in a box for about 3 weeks now since nobody was using it and today I wanted to turn it on again, that worked great, it only took about 5 seconds to boot into windows (which is basically a new installation, I reinstalled Windows, switched a hard drive and repasted the cpu and gpu before storing it away, I tested everything and let the system run for a day and everything worked fine) then after about a minute windows froze, so I kept pressing the power button until it was turned off, then I wanted to turn it on again but on the whole screen ( during the HP boot logo) there where those white stripes, no colour, only white and black) that's where I hit the power button again which leads me to this problem:
now my laptop won't boot
when I hit the power button the button lights up and the fans spin up for about a second and then it instantly turns itself off, repeating this process without ending and there is screen stays black.
I connected it to the power supply but the same problem occured, the laptop has been charging for about half an hour so I tried again but the same problem...