What would have to happen for a laptop to explode?
The battery should explode, due to overheating or a design fault.
How hot should the battery get? How could such a design flaw actually look like?
A design flaw could be in the separator, which separates the plus and minus poles from each other: If it is damaged or damaged, a short circuit occurs. Sometimes the lithium battery explodes. I have no idea about the exact degree of heat.
If then it is the battery that overheats or suddenly starts up due to a mistake.