I had the "Your PC ran into a problem" blue screen while I was using Visual Studio in Windows 8.1, and then I am never able to start Windows 8 again. Now after I set Windows as BIOS boot option 1, I can't even start GRUB anymore (before Ubuntu 14.04 was my boot option 1, Windows was option 2). Right now after I press the power button, it's just a big black screen. What should I do? I want to at least be able to start Ubuntu. Thanks.
Addition info: Asus Q200E, Intel Core i3, Grub's windows settings (before I set Windows to boot option 1):