|Mostly on Desktop computers----|
DUST collects inside computers, and can cause hardware
damage, overheating, faulty fans, faulty drives
Is yours clean.????
^^^ Some pictures ^^^
Possible that the harddrive is not running at its normal speed,
freezing up or slowing down. Or has quit.
My computer took 20 min. to boot the other day.
I was watching the HDD activity indicator light,
and it would remain on, and not rapidly blinking.
Mechanical devices do have problems.
Harddrive manufacturers have software for download for testing HDD.