grub ошибка after deleting Elementary OS from в тройственность booted laptop [удвойся]

Recently I installed Elementary OS on my laptop alongside Ubuntu 14.04 and Windows 8.1. After Using it I decided to remove it. So From my Убунту I deleted all partitions related to Elementary OS. And updated grub:

sudo update-grub

Unfortunately I forgot sudo grub-install /dev/sda.

I restarted my computer and got grub ошибка. I tried Боот Репаир Disk, but its not detecting WiFi. Is there any other way I хан repair it without Интернет connection??