Chosen Solution
Please watch it here and read description https://www.youtube.com/watch?v=UyRyB5D-…
Hello, according to your tests the main problem is your HDD, I believe if you replace it with another one it will work perfectly. So why it’s booting normally when you exit the BIOS? My theory is some electronic component drawing more current than usual when it’s cold (ambient temperature) and during the boot process (push power button to BIOS) it will heat up, this rise of temperature will increase its resistance and consequently the current flowing inside it will decrease and when you restart again the component is already warm and the Motherboard will detect the HDD.
I guess it may be caused by hardware damage, improper hardware connection or hardware changed recently. It’s not hard to solve it,
