Hi,
short story aboat my problem. Okay, not very short, but i try to include all details.
after some water damage over the keyboad (following a complete drying of the parts) the notebook worked fine for a couple of weeks.
Then, after some HP updates, the PC was not able to turn on anymore. Power LED was lightning, fan was blowing full speed, but screen was black. This goes on for a few second, then everything off, and a few seconds later everything startet again. This was looping until the battery was emty, no way to stop it.
After that the device could not be turned on anymore. But after connecting the charger,
Power-Switch, CapsLock and Power-Jack Leds were on at the same time, then first power-jack-led went of, and a second later power-switch and capslock. Then everything went on again. Loops continously, while screen black and no fan, no beeps. No reaction to pressing the any key or power switch.
Well, i disassembled the complete device to check for visible damages from the water. Nothing. I also measured the power-switch, but its all right. Stripped everything down, removing battery and bios-buffer battery. (By the way: its a realy, realy bad design that you have to disassemble the complete device to the core to change bios-battery or disconnect main battery. Shame on you, Hp for this.)
After connecting the battery again to the main board (keyboard, card-reader-board, touchpad etc was still disconnected.) the device was booting like a charm. After putting everything together, i checked everything,runned some stress tests but everything was working.
But after i turned off the pc, i was not able to turn it on again. Everything black and dead.
So i disassembled again, removed the batterys, connected an external keyboard, put the batterys back again and the thing started easyly. I did all the self-test provided in the bios, everything was fine.
Windows also booted fine. After windows was running, i tried to turn it off with the power button. Also worked (conlusion: the button itself is working).
But as soon as it was of, i was not able to turn it on again. Only by disassemling and removing bios and main battery.
Im very fast now in disassembling the device, feeling a litte like dr. Frankenstein. But its a very inconvinient way to turn on this thing.
Anybody of you has any idears what might be wrong? Just always having the thing powered on is a possibility, but not a real solution ;).
Thanks for reading and sorry for my sloppy english. I hope you were able to understand everything.
Best Regards,
Felix