Dual Boot with Windows 10. GRUB won't install, need help.

[cbgx]

Having the same issues here. So how did you solve this in the end? Could you explain cause I'm a massive noob rn and would like to learn :) THX so much! I still have to read similar threads to see what theyve said about this issue. I hate it cause I had previously installed Ubuntu 16.04 lts and 17 on other laptops and non of these inconviniences ocurred, so now Im so lost with my new issue of not being able to access to GRUB

[oldfred]

Moved from this thread.
https://ubuntuforums.org/showthread.php?t=2390269

Boot issues are often unique.
Hardware can be different, configuration is often different, so solutions in one thread may help, but if you need detailed help best to have your own thread.

What brand/model computer? What video card chip?
Is Ubuntu installed and just grub issue?
UEFI or BIOS system?

May be best to see details, you can run from your Ubuntu live installer or any working install, use ppa version not older Boot-Repair ISO:
Post the link to the Create BootInfo summary report. Is part of Boot-Repair:
https://help.ubuntu.com/community/Boot-Info and:
https://sourceforge.net/p/boot-repair/home/Home/