YOU TRY THE INSTALL from w8? via wubi?
microsoft is doing us wrong....
it happens to me but w7 64, then i backup and try again, reinstall w7 from backup / restore and install again ubuntu 14.04 avoiding wubi... there is a problem when you run the install from cd...INSIDE WINDOWS via wubi and certain choices ones mde
it writes MBR with grub from win and the grub can't be overwrited cause win problems, more or less, I also discover to avoid inserting SD or other unnecesary media -specially if they are placed during boot, cause booting virus can cause to be active and pass to the normal boot tainted- keeping you away of choosing the right device. even loaded the boot virus I THINK is harmless when it sees your computer SPEAKING LINUX GERMAN, JIJIJI Better option is to install FROM alternative booting media DVD CD USB. You had the extra handicap W8 REFER TO THE LONG ANSWER
Installing Ubuntu Alongside a Pre-Installed Windows with UEFI
by the way, then i can boot w7, but booting ubuntu doesn't work cause misdirections between alongside kernel and recently installed on another partition, i think the problem is always the misconception ones haves on the options.
Boot loading problem after Wubi installation of Ubuntu 12.04 on Windows 7 AND A DAMAGED SYSTEM IS ALWAYS RESTORABLE VIA A LIVE CD. and searching for the right solution. it seems difficult to install from w8
a great suggestion is google all the information you have on the problem or your aim goals i.e. for me looks like this
INSTALL UBUNTU HP MINI 3100 REMOVE WINDOWS, hey i don't miss SLOWindowSPAM, if you miss something try to get one iso BOOTABLE AND RUNNIT ON VIRTUAL BOX, or even better you can try even more OS from virtual box, just DW the iso or bootable image and try it DRIVE TEST.
fOR YOU LOOKS LIKE THESE
laptopMODEL brand install ubuntu alongside w8/ w8.1/ windows 8 or so
refine your search reading and taking ideas of what you see -WORD to avoid WORD DISPLAYING AT THE SEARCH RESULT... someone with your same concern maybe are reaching first to your aims before you. good luck
A great option "as seen on knoppix" is starting linux (virtual or "physicallY" as primary OS on a server, meaning any machine on the net) and then run THE SERVER service so any amchine on the same net can BOOT from the shared resource -just configure the BIOS on ALL the clients to bot from NETCARD, some gave you the possibility via F2 orsomething similar on SLOW STARTUP-, BOOTING Usb or hd IS another option for you VIA PENNDRIVE one caN EVEN BOOT ON live cd WITH PREDEFINED PERSISTENCE ON fat 32 16.