OK, a computer crash. Let’s see the records of the crash, the work orders for repairs and interview those who submitted the orders. The techies should be able to determine if the “crash” was deliberately caused.
One crash cannot, will not, cause the loss of anything in today's IT environment. Maybe what someone is working on at the time, but certainly not work, including emails, from the day before, for example.
Lets see the records of the crash, the work orders for repairs and interview those who submitted the orders.
Probably lost those, too.