Have a Toshiba Satellite Pro, that had a dual boot (WIN 7, and WIN 10 Tech preview). Setup a separate partition called Unbuntu, and installed Unbuntu 14, on that partition. Now Unbuntu boots first to a Grub menu (I’m a newb Linux user), and it gives me choices, see below
The menu looks like this:
Ubuntu with Linux 14.0 generic
Windows 7 (loader) on /dev/SDA1
Windows 7 (loader) on /dev/SDA2
Memory test (memtest86+)
Memory test (memtest86+, serial console)
If I pick the first Windows loader (SDA1), I get the Windows Boot Loader, with choices for Win 7, and Win 10 tech preview. Win 10 load perfectly, but if I pick Windows 7, I get the Windows splash screen, then my computer shuts down, and reboots to Grub. If I pick the 2nd Win 7 loader (SDA2), neither one works. I know I didn’t overwrite the Win 7 OS, because I can see all files, etc, in either Ubuntu, or Win 10. I really need to get Win 7 back on its feet.
Any help is appreciated