I've successfully dual-booted ubuntu following you and it worked fine, but after using windows 2-3 times now I am not getting grub screen and windows is booting directly please solve this issue
Hey Prakhar! I guess you'll have to set up the boot order once again. For this, you must reboot your system into the boot menu, and find the hotkey for your system from here. While you're in the boot menu, move GRUB up the priority list so that your system boots into GRUB every time.