Hi everyone

I have a laptop that still runs on prehistoric Vista. I would like to change it for some OS that would work on my spec + still be safe to use (probably Linux).
But I ran into a problem - my laptop doesn't want to enter BIOS. It only opens boot manager (where it shows Vista option).
I made factory reset + already tried with the latest BIOS update for my model - still doesn't work.
I believe it would still be suitable for simple tasks like browsing and writing, but I'm not prepared to spend money on it, so I would be grateful if anyone knows for a potential solution I can find on my own.

I've searched extensively for the solution before posting here but sadly I didn't find anymore clues how to proceed.
Thank you,