Praveen, you already deserve the High Five for providing me with such an extended level of support 🙂
You will get the "Accept as solution" once I will have completed the procedure.
In fact I had already made progress before reading your solutions.
As the laptop was not starting at all (you press the start button and nothing happens apart from the white light of the said button blinking at intervals), I opened it and removed the battery. It was a non removable battery but I found the How To on HP's support pages.
Now the PC starts starting but I have an error code blinking on the Caps Lock key: white 3,2 which apparently means that I need to proceed with "Reseating memory modules in a notebook"
Which I will try later today.
Anyway, thanks a lot for reaching out and trying to help me. That's very very nice.
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