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Hello everyone, I am a total noob at all of this so please forgive me if my question is filled with ignorance.

I have successfully set up a dual boot of Ubuntu 13.10 and Windows 8 on my Asus Vivobook S400ca Touch Screen. I have no problem booting straight into Ubuntu, I can then successfully reboot into Windows 8 by choosing "Windows UEFI bkpbootmgfw.efi" on the GRUB 2.0 start up window. The problem comes up when I want to then boot back into Ubuntu after booting into Windows. After the GRUB window appears Ubuntu tries to open but it freezes on a dark purple screen. I can get around this by booting onto an Ubuntu USB and rerunning the boot repair, after which I can again successfully boot into Ubuntu, or at least until I boot Windows again. My guess is that Windows boot manager is changing something every time it opens and refusing to recognize any other OS. Does anyone know what Windows is changing and if there is a way to turn it off.

If it is of any help the boot repair provided this URL, after repairs. here

Thanks in advance for your help. Viva Ubuntu!

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