Call insurance company. Dont take anything apart for diagnosis, the moment you touch or change anything, you void any claim on that item.
Make a price list of All the combined parts value to replace, give that to the agent. It got hit by electrical surge from lightning. Consider it 100% fried. (until proven otherwise).
The agent has 2 options, full replacement value, or insist on sending to repair shop. If repair shop, it's on You to insist on exact or at minimum, equitable components. No $50 white-in house brand replacement psus thank you, unless what you have is equitable to a $50 white in-house brand psu.
As to other stuff, roofing, electrical etc, get the agent to authorize or set that up, then they get the bill, otherwise you'll be paying the bill. Most insurance companies will fight you on that, cuz they don't want to pay for anything out of their control. They can and will claim that you got the electrical inspection/repairs, they didn't, so they shouldn't have to foot the bill.
You pay them, in affect that means they work for you, so make them do the work. Anything you take on personally is outside the scope of their involvement.