Debian Boot Problems

[Harikrishnan R]

Hi!
I installed debian alongside windows and on the first boot, it says "Grub Error: Unknown Filesystem". I can't even boot into windows now.
Does anyone know a fix or workaround ? I've tried reinstalling but it shows the same error. Also, my motherboard is Gigabyte GA-B75M-D3H Motherboard (chipset is B75).
Thanks :\

 

[lobo]

How did you install? Separate hard disk or did you just free up space on the same disk where the other OS is installed?

Reboot again and when you get to the same error, enter the following at the "grub rescue >" prompt:

ls

Note down what you see.