Make sure the recovery usb is correctly initialized. Did you download this from CS site ?
In any case, I suggest the following:
1) shut down the unit
2) remove all disks
3) Try to reset the unit using USB boot with new HDD or if possible:
a) use one of existing disks, remove all partitions (clean) the disk.
b) check disk health (using crystal Info) if possible
4) use the clean disk only - put one disk in the unit
5) reboot using the USB boot recovery
if above works , let me know I will follow up with additional guide.