I've seen that happen when the partition table is corrupted. The device still shows in the noted 2 other places.
I plugged in my external hard drive and when Windows asked me what I wanted to do, I accidentally, chose to have BSPlayer play all the files (which I did not want). Anyway, BSPlayer then proceeded to scan and play all the files. I tried shutting down BSPlayer before it had finished doing what it was doing but ended up forcibly closing it.
After that, the external hard drive was no longer responsive. It was like loading or something, the little light that flickers when it's doing something flickering non stop. I thus chose to unplug the external hard drive from my computer and I got an error saying that the writing of the data had failed (even though there is not reason anything should have been in the process of being written...).
When I hooked up the EHD afterwards, the light flickers like it's trying to access the files but nothing happens on my computer. I waited almost an hour thinking it was trying to check for errors or something, but the EHD just doesn't show up at all anymore. I've unplugged the EHD's plug and plugged it back. Still the same result. EHD is blinking like as if accessing a file but doesn't stop and doesn't show up on my computer at all.
No asking to reformat, no asking about anything, not being detected at all by my computer or even by other computers (I've tried).
Any help would be appreciated. Thanks!