Mod Edit: Split from http://www.bleepingcomputer.com/forums/t/567388/cannot-boot-into-windows-i-keep-getting-reboot-and-select-proper-boot-device/ - Hamluis.
I have a similar issue to the above and am looking for an answer. I have Win 7 Pro on a Lenovo B590 w/ a 500 Gb HD. I've been running a WD Terabyte external drive for back-up and recently added a WD 4 Terabyte USB 3.0 drive for additional storage. When the second WD drive is connected, my laptop won't boot normally; it wants the 4 Tb drive to boot first. I checked the boot sequence and my C: drive shows as Drive 0, which should boot first.
Any ideas how I can get the C: drive to boot first when the 4Tb WD is connected?
Edited by hamluis, 20 February 2015 - 09:23 PM.