Question Laptop shutdown

[Prodan Silviu]

Hey i have a HP ProBook 6470b
Today when I tried to turn it on I have black screen and after 5 seconds turn off auto
I tried to start without battery only eith AC but nothing
Take out the HDD and ram and puy it back but still nothing
I search in forums for something but nothing .. Help me please I have to do projects for university when we study from home

 

[helpstar]

unplug only the HDD and try again