Linux Server Administrator

My Linux server has refused to boot up even with "Network boot mode". The problem started when i tried to do a "hard reboot" of the server and suddenly, it refuses to boot up with "hard drive boot mode". The only way to access the server through SSH right now is through "rescue mode". I can not even access to the server WHM panel because it is in "rescue mode". This is the following error message: ======================================================================== Details about this operation: Diagnosis interface boot (rescue) Date 2017-11-04 14:43:51, Kevin H made Diagnosis interface boot (rescue): Here are the details of the operational Performed: The server gets stuck during the boot phase, with the message: ( minimal BASH-like line editing is supported. For the first word, TAB lists possible command completions. Anywhere else TAB lists possible device or file completions.? grub> ) A restart on the standard OVH kernel ( 'netboot') does not correct the situation. Actions: Rebooting the server to "rescue" mode (Linux) result: Boat OK. Rescue mode accessible. recommendations: Configuration / error to be corrected by the customer =========================================================================