HP elitebook 850 G6 won't post

[Davide0033]

hi, i'm new to the community but i had a bunch of hp products during the years.

three years ago i bought an HP Elitebook 850 G6, it has always worked great until yesterday.

i left if running for the afternoon, as always, and when i got back it was off.

i tried to power it on, but the fan would spin to max speed for around 10 seconds and then shut off.

after reseating the ram, nvme and trying two chargers it finally posted between a corrupted bios error and another.

it booted into windows and it showed no problems whatsoever, then it randomly shut down. got the same corruped bios error, restored it and then it booted. this happened like 2 more times.

then it shut off, and just restarted, and then it shutted off for the final time, and it's not doing much.

sometimes the fan spin up, sometimes it doesn't do anything and sometimes it try to power on for one second, and then die.

when this happen i've seen the charging light fastly blinking between red and white around 8 times (it blinks red 8 times)

and of couse, all of this after 1 week by the end of the warranty

[Davide0033 · Accepted solution]

well, i ended up taking it apart by myself (because it's mine and because it's out of warranty anyways) and there was a fried chip on the mobo near the usb port that shorted the 5V to ground, it was soo coocked that i just removed it, and now it works (the usb of couse is dead, but at the least it works)

if i remember correctly it should be u2400