C Drive Failure/Faulty Drives

Hi All,

This evening my NV+ stopped working which was noted by the TV saying "no contect".

Upon investigation, i identified that the NV+ had locked up in that it was still on, powered and showing "normal" info in the screen, but it would not respond to a depress on the on/off button, so I ultimately had to kill the power.

On boot up it said "failure on Disk 4" and would not shut off via the on/off button.

I killed the power and pulled all the drives before booting the nAS NV+ again.

THis would nto boot.

So i switched it off, and  did the following:

a) inserted drive 1, repowered unit - got "faulty drive", powered down

b) inserted drive 2 (removed drive 1), powered unit - got "Faulty Drive", powered down

c) removed 1 & 2, inserted 3, powered unit, this time it booted, but said 1/1GB agavilable,powered down

d) i kept 3 in place and inserted 4 - powered unit, but said 1/1GB agavilable,powered down

e) inserted 2, 3 & 4 - powered unit, but said 1/1GB agavilable,powered down

f) inserted all 4 drives - received C drive failure & bad disk

Any advice? 

I am on the most up to date firmware for the unit (4.1.16).

can i get it back up and running again - if not how is best to extract the data?