Check the RAID controller from the BIOS to do a RAID verify - if using a HW RAID.
Also try and download the Demo-CD for the NAS-XSR and see if that brings it up without the stoping at 65%. If it does not stop then it is DOM and my have to be re-flashed. I hope that you saved your settings from the past in the GUI but if not then just re-enter the IP and other info.