Virus in BIOS? Is it possible to?

Question

Malware

Tomorrow you need to carry the PC to the service center, as it does not start the first time. And who knows what might happen there, after that, just in case, I will reinstall Windu in order to protect myself from viruses. But what about BIOS? Could he be infected?

Answer 1

because it does not start the first time

he's already there

Answer 2

Those people who can do something of what you are afraid of will not sit in the SC fixing old junk and planting VIRUSES there. So get that nonsense out of your head. Nobody needs you. At most, a neighbor will peep through the window for the sake of interest.
And if you have real paranoia, then sell the apartment, throw away the computer and into the taiga.