Easier than an exorcism

INSUBCONTINENT EXCLUSIVE:
It back in the day — the early 386 days, in fact — and pilot fish owns a computer sales and service business
A customer drops off a desktop computer that, at random, doesn&t turn on from time to time
So fish replaces the power supply, and it starts up fine
Then fish powers it down, and now it won&t turn on.Back to the workbench it goes
Fish disassembles the PC and tests it with all of the parts out of the case
It powers up every time
Fish puts the machine back together, and it still powers up every time.Of course, you know Sharky well enough to see that the other shoe is
about to drop.Fish takes the machine back to the customer, turns it on — nothing.