Hello all. Brand new on this site. I'd be grateful for any ideas. I'm using an iMac desktop- not too wizzy, but capable. El Capitan, 10.11.06 After some time not using it, I plugged in a Buffalo external hard drive to check the contents; mostly stored music. It seems not to power up; I'm leaving it, for a few hours, in the hope that it does. I see the power light flash, briefly. It is all intact, no physical trauma. What I have read suggests a five year lifespan, possibly- which is around its age. It has hardly been hammered with use, so the disk ought to be ok. Advice suggests not even leaving it plugged in- it hasn't been, for a year; and no power surges. Any ideas? I'm resigned to maybe going a store, to have it rescued.