In Settings>>Monitor or Displays, is the current setting changeable?
Or for the same Tool use {Super or Windows Loge + P} again check the resolution...
You don't indicate which version you are using but if it is a newer one (8 or newer) the default is to use hibernation so the system appears to boot...
If installer sees DOS, MBR(msdos), with Windows it will try to install in BIOS mode. If Ubuntu installs in either UEFI or BIOS mode to MBR drive, you...