Currently Being ModeratedSep 13, 2013 8:08 AM (in response to Scotch_Brawth)
I was getting the same and my problem was Intel HD 4000 drivers. Had to update the EFI to 2.6, upgrade to Lion, and reinstall the drivers. Works fine now. I was on a macbook air.
Currently Being ModeratedSep 13, 2013 8:39 AM (in response to RB DEAL)
I don't run an Intel HD 4000, but I think I did do an Thunderbolt update recently. I don't think would have affected the Boot Camp install.
OOC, how did you "reinstall the drivers" if you couldn't boot into Windows?
Currently Being ModeratedSep 13, 2013 10:50 AM (in response to Scotch_Brawth)
Safe mode would boot fine. Windows was running, just the display was not coming on. Safemode disabled the third party drivers and the dislpy would fire right up.
Currently Being ModeratedSep 13, 2013 12:52 PM (in response to RB DEAL)
Safe Mode doesn't work either. Besides, I don't see how this could be a driver issue. The install worked fine when I last used it. It's something that's happened when I wasn't in Windows that's caused a breakage.
Currently Being ModeratedSep 16, 2013 6:01 AM (in response to Scotch_Brawth)
Looks like you lost your mac recovery partition between the second and third GPT parts.
Not sure why this would mess up your Windows partition - the only difference seems to be that it has a different number.
Maybe someone who knows more than I do about this will know how that could mess it up and how to fix it.
Currently Being ModeratedSep 16, 2013 7:00 AM (in response to Scotch_Brawth)
It might be worth seeing if rEFInd can help find the various parts of the Windows bootloader to get this to work. Otherwise it's exploratory sugergy to find out what's going on. The Apple CSM-BIOS isn't configurable, so it might be blindly loading the first available Windows bootloader it comes across instead of the one for the drive that contains the bootable Windows installation - i.e. if the external ever had a Windows install attempt onto it, it'll have a bootloader, even if the install never worked or you reformat it. Two Windows bootloaders will cause such problems. If there's no possibilty of two drives containing two bootloaders then it's some other confusion or corruption either at the bootloader level or maybe even NVRAM.
Currently Being ModeratedSep 16, 2013 11:38 AM (in response to Scotch_Brawth)
I have actually made it possible to use gdisk & rEFit to triple boot the system with Mac, Windows8 & Windows7. Right now I don't have time, but tomorrow for sure I will post the reply.
Currently Being ModeratedSep 16, 2013 4:47 PM (in response to Scotch_Brawth)
Following advice from a thread on MacRumors, I unplugged everything except the keyboard, mouse and monitor and Windows booted fine. So, it must be a hardware incompatibility issue. I'll figure out exactly which device is responsible tomorrow.
Thanks for the additional replies. For anyone who's interested, I'll post the device responsible once I've figured it out.
Currently Being ModeratedOct 12, 2013 10:02 AM (in response to Scotch_Brawth)
Turns out the culprit is my Plextor PX-120U USB BDROM drive. I unplugged it and Windows now boots fine.
Just in case anyone else encounters the same problem…