My history of computer issues is one reason I understand how it feels to be at the vet’s with your pet and have to trust someone when you have limited information.
The other reason is my history with car issues.
Computer technicians and mechanics are magic.
I spilled Diet Coke on my work computer. At first the “I” key wouldn’t work, then all it would type is “iiiiiiiii.”
I sent it to the computer hospital. I do not know quite what they did, although they explained it well. When it came back, it worked again.
You do not need to completely understand computers/cars/veterinary medicine. You do need to know someone you can trust.