HP OMEN Laptop 15-en1507na board DAG3EFMBEE0 REV:E does not POST

[Clumspypenguin]

Hi

First post for me.
I have a HP OMEN 15 laptop from which it looked like it had corrupt bios after an overnight windows update.

Model Number: HP OMEN Laptop 15-en1507na
Product Number: 3Z7K4EA
Board Number: DAG3EFMBEE0 REV:E

The behavior before i resoldered a newly flashed GD25LQ128D was that when i pressed the power button, the led lit up for around 2-5 seconds and then turned off completely, no POST.

Now after i found the correct bios (i assume: HP SUPPORT URL) and reflashed a new chip with it. the power led stays on and both fans are spinning, but unfortunately still no POST. No caps lock LED or anything...

I tried to swap the RAM sticks, unplugged the battery and pressed the power button for 1-2 minutes.

I was wondering what the next step could be and where i should look? Could someone help me with this please.

[Techtiger]

Re: HP OMEN Laptop 15-en1507na board DAG3EFMBEE0 REV:E does not POST

Upload your old bin on BOIS section à expert in bios will help you out

[Clumspypenguin]

Re: HP OMEN Laptop 15-en1507na board DAG3EFMBEE0 REV:E does not POST

unfortunately i no longer have the old BIOS chip, but i was not able to read it out anyway.

I got the message:
Current programmer: CH341
IC not responding

[ktmmotocross]

Re: HP OMEN Laptop 15-en1507na board DAG3EFMBEE0 REV:E does not POST

mostly it is bad chipset. on hp omen and acer predator it is most common fault

superio sends starting signal to chipset, but chipset not respond to sio to release enable signals for voltage rails

[Clumspypenguin]

Re: HP OMEN Laptop 15-en1507na board DAG3EFMBEE0 REV:E does not POST

I had mistaken the wrong model number:
correct one: HP OMEN Laptop 15-en1013dx
SN#5CD1126Q47

[Clumspypenguin]

Re: HP OMEN Laptop 15-en1507na board DAG3EFMBEE0 REV:E does not POST

mostly it is bad chipset. on hp omen and acer predator it is most common fault

superio sends starting signal to chipset, but chipset not respond to sio to release enable signals for voltage rails

Is it possible to fix this, or is too much?