Hello All,
I have been running into a series of problems after updating to Win 10 and am curious if anyone has any insight into a resolution.
Firstly, I have a 4,1 to 5,1 cMP with dual x5677 processors, a vanilla gtx 980 installed, a flashed gtx 780 on hand as needed; OS X 10.10.5 installed as a RAID 0 across two ssds mounted in bays 1 and 2 on the backplane, spinners in 3 and 4, windows on an ssd mounted on a velocity solo x2 in slot 4, a USB 3.0 card in slot 3, slot 2 being open and the GPU in slot 1. I do have an upgraded AC wireless card and a blu ray reader in optical bay 2.
So, previously I had everything working fine with Win 7 installed. I used bootchamp to switch OSs sans boot screens and everything was hunky dory. A couple weeks back I ran the windows upgrade path to win 10 and things worked well for a couple days before I started showing serious disk corruption on the windows ssd. I attempted solutions, dskchk, sfc scans which offered a brief working window before windows would corrupt and and stop booting up again. So I used the recovery tools in windows advanced start up to reinstall windows, wiping all my user data and starting fresh. I reinstalled everything, worked for a few days and then my windows start menu disappeared. Windows worked and booted in properly, but the start button would not actuate the start menu, and various other minor windows services wouldn't work. But since I mostly game in Windows I lived with this for about a week as I re-read this thread preparing for another complete overhaul.
I got a brand new SSD, downloaded the bootcamp 5 drivers onto a USB drive and made a win 10 installer on a USB stick. I installed my flashed 780 and pulled all my other hard drives out, leaving the velocity card empty but installed and mounting the fresh SSD on the backplane in bay 1. I option booted directly to the windows USB installer, bypassing the bootcamp hybrid issues in theory, and proceeded to install efi boot windows 10 on the SSD. Went fine, got everything up to date and reinstalled, and then powered down. I got the hardware reinstalled, moving the Windows drive back to the velocity card putting the GTX 980 back, along with my other hard drives. Things worked for about three days, booting back and forth between OSs as needed, and last night I shut windows 10 down as I normally would. Today however, when booting through bootchamp, I get a 'No Bootable Device' message following the velocity card's bios screen.
I trouble shot the problem, using this
thread's suggestions. Verified OS X was the start up disc, full shut down of OS X etc. No luck. With the 980 installed my option boot screen does nothing. It's not an issue of not seeing the disc options, it physically does not work, and a single press of the power button during this black screen period immediately shuts the tower down. So I reinstalled the 780, which does allow me to option boot into windows successfully. But upon reinstalling the 980 I am stuck with the no bootable device message when using bootchamp.
What's going on here? Seems like an EFI related issue but I don't know. PRAM reset just results in my having to re-enable my NVIDIA web driver in OS X, and an SMC reset had no discernible effect. Sorry to write a volume but I don't know how else to explain. Thanks SO much for any input!