Recently, i installed Lubuntu 18.10 as a dual boot to my Windows 10. When i startup the PC it shows the grub boot options, i select the Lubuntu 18.10 and Lubuntu logo shows on the screen. Couple seconds later PC shutdowns. Weird part is when i start the PC again it doesn't show the grub boot options again, it goes directly into Lubuntu. This is not an issue if i select Windows 10. I used Boot-Repair but it didn't help. What can i do next? Boot-Repair said my Ubuntu installation is far from the start of the disk i don't know if it is the problem.