Back in the early days, when I worked as a Computer Specialist, the standard hard drive format was “MFM”. One of the many things that could go wrong with them was the mechanism that started the platters spinning would “lock up”. A jolt (with the PC turned off), would allow it to start up when it then got turned back on. When I told one user to do this, his boss got upset with me “telling his employee to hit his computer”. I responded by telling him it was that or buy him a new hard drive, which shut him up…
They fired him when he tried to make an insurance claim. And they rejected that on the grounds that getting shot down by the Red Baron was a “pre-existing condition”…
Oh, shoot, no more than 75% or so… ☺