My Passport 1TB - Keeps disconnecting

I have the exact same problem with my WD My Passport 1Tb (WDBBEP0010BBK-03). Keeps randomly disconnecting after the PC has been running a few hours. But mine never re-connects. I have to unplug & re-plug in the drive to get it to wake up. I’ve only had it about 6 months, and its been doing this constantly & randomly for the last 2-3 monhts. I’m running Win7/64bit Ultimate. Are you finding any answers here? I went thru their entire knowledge base, and the only thing closest is a report of USB3.0 drive disconnecting & reconnecting due to USB power management issues. But mine is USB2.0 & I have power management turned off & the drive set to never sleep.