Go to this web site and download the script to DESKTOP and then run the code below in a terminal and it will put a file named RESULTS on your desktop. Copy and paste it to your thread (after copy and paste highlight and click on the # sign in upper right of message box.
SourceForge.net: Boot Info Script - Project Web Hosting - Open Source Software
A lot or users have the ability to read this file now and help you.
sudo bash ~/Desktop/boot_info_script*.sh
Boot problems are not usually a difficult item to repair.