So every time I booted my pc I got an error saying "unknown file system entering grub rescue mode", something like that. I could still boot eiither windows/manjaro by setting boot and prefix but I wanted to resotre grub so I followed this: Using livecd v17.0.1 (and above) as grub to boot OS with broken bootloader. I went with the single configfile method. I restored vanilla grub but every time I login I am greeted with login error message which only displays for few a few seconds and then returns me to the login screen.
Login error message