Dual boot problem, black screen during the ubuntu boot
You're probably running into one of many "blank screen" problems that have been common in the past year or so. See, for example, these questions on this site:
- Ubuntu 13.04 on UEFI system hangs at black screen
- Ubuntu 12.10 - Black screen after GRUB, can't install. UEFI
- My computer boots to a black screen, what options do I have to fix it?.
There are many others, too; try this Web search to see them.
Unfortunately, there is no one "magic bullet" solution, because these problems have multiple causes that require distinct solutions for each individual cause.