Please check the all of indicator lights on your server (color, solid or flashing). Based on the status of these light the manual provided with the server may offer a solution. If not,
I expect one of your disks is (or other hardware) failing. Backup service not running can be caused by a failing disk. For now I suggest you shut down the server, physically remove each of the drives, mount the drive in another pc and run chkdsk /r on the drive and put the disk back in your server (one disk at a time so they get put back in the same place!!).
After you have checked all of the disks in this way boot the server again hopefully this has fixed has your problem. If not I guess your only option is to run a server recovery (NOT FACTORY RESET). You need to run server recovery with all disks attached.
If server recovery fails or fails to initiate please read How to recover data after server failure