Ubuntu only Boots after Booting Windows and Restarting
Solution 1:
your graphics card might be causing this.
try to enter into ubuntu with "nomodeset"
- when you see the grub, highlight to "Ubuntu" and press e to edit the kernal parameters.
- go to the line starting with "linux" and find the string
ro quiet splash
- add the text
nomodeset
in between "ro quiet splash". now it should look like thisro nomodeset quiet splash
- press Ctrl+x or F10 to boot.
- Once you enter into Ubuntu.. try to install the rite drivers for your graphics card.