The system was working fine when on monday morning it displayed the blue death screen with a message referring to a memory address followed by the message of inaccessible_boot_device. It asked to check the system for viruses or to run chkdsk/f. The system now doesnot boot even in safe mode and when i tried to reinstall Windows 2000 server, it doesn't even recognize a harddisk and says there is no harddisk present. It could be because of the RAID, but how do i configure that? and how do i get my system running without loosing the data. (There are four harddisks on the server)