I have dual booted Windows10 and Ubuntu 14.04, which has been working properly for about two weeks. I then had issues with grub (it would boot straight into Windows), which I fixed using boot-repair on my Ubuntu installation usb. After fixing that and checking to make sure both Windows and Ubuntu work, I continued working from my Ubuntu side for 6 hours. Everything worked. I shut off my computer properly for the night and when I booted it up again this morning it went straight to BIOS with no boot options. Can someone please help me?