Internal HD clicks until removed from PSU. Once reconnected, works flawlessly. Why?

kelpdarocka

Honorable
Jan 23, 2014
1
0
10,510
Seagate 500GB Barracuda, Enermax 450W PSU, Intel DH67CL mobo, Win7HP64.

I've seen this on multiple computers. Any ideas?

Edit: After reconnecting, the HD passes Seatools and continues to work w/out issue. I've seen this happen on multiple systems now and it seems to be a trend.