Hardware problems usually show up at POST,unless there is physical damage to an area of the hard drive that is not accessed during POST.

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Quizplus · Accepted Answer

Hardware problems typically manifest during POST (Power-On Self Test), which is an automatic diagnostic test that a computer performs when it is powered up. However, some physical damage to the hard drive may not be detected during POST, depending on the location of the damage.

Hardware Problems Usually Show Up at POST,unless There Is Physical