HP Omen 17-an024ng (2CP65EA) - Blinking Caps (5 long, 3 short) After windows (and driver) Update(s)

[Stahler]

Hello you kind and willing-to-help people  🙂

This Saturday I decided to Update my device with the latest Windows Update (H20) and some driver updates that nagged me for a while now.

Unfortunately, after or during the Update(s), my Omen shut down and won't start up any more. (Guess the combination of H20 and drivers simultaneously went wrong somewhere)

I get a Black screen,  left fan working,  right fan starts for a brief moment and stops immediately.

The CapsLock blinks 5 times slow and then 3 times fast.

According to HPs Information this indicates

 "The embedded controller times out waiting for the BIOS. "
And: "Remove all accessory devices from the notebook. If the error code persists, contact support for possible repair."

Sadly, this didn't work at all.

Here is a list of what I tried additionally:

- Removed the battery, pressed Power for 30 seconds to discharge, reconnected power supply and tried to start
- Removed, switched, cleaned RAM, M2 and SATA-SSD
- Disconnected the USB controllers, the HDDs and tried with only one RAM at a time
- Created a USB-media with the latest BIOS Firmware and tried to start The Omen with the Key combination(s) windows+b, windows+v, just b, pressing F2 (hold and rapid), pressing ESC (hold and rapid)

Unfortunately nothing worked and thus I am confronted with a beautiful defunc Omen 😞

I mean yeah, there is a small possibility that the system board is damaged (as this could happen anytime right?) BUT:
The odds of this happening right after(or during) the update process are kinda low 😕
Especially regarding the fact that I had NO issues whatsoever with my system aside from a HDD crash during the first 6 or so months and the laptop was never even moved (as I used it more like a desktop PC)

Quick sidenode:
During the aforementioned HDD failure I had to install a new HDD and thus, no Partitions of the original Drive are existent. Maybe that might be a possibility as to why the BIOS recovery didnt work? If so, what could I do about it?

Thank you very much in advance and kind regards 🙂

Adding to my distress: even though HP has a product page for my OMEN,  the there linked manual has no part number for my specific mainboard.

I do really hope, that someone here has some more ideas on how I could safe my Laptop, get into the BIOS-Update sequence, make a factory reset yada yada yada...

Thank you for your time and kind regards.

Stahler