Thanks for the input guys.
Have now managed to get the server to boot into normal windows mode. I know have the following errors in the event log.
Event ID: 474
lsass (784) The database page read from the file "C:\WINDOWS\ntds\ntds.dit" at offset 10575872 (0x0000000000a16000) for 8192 (0x00002000) bytes failed verification due to a page checksum mismatch. The expected checksum was 3525701925 (0xd225f125) and the actual checksum was 4062572837 (0xf225f125). The read operation will fail with error -1018 (0xfffffc06). If this condition persists then please restore the database from a previous backup. This problem is likely due to faulty hardware. Please contact your hardware vendor for further assistance diagnosing the problem.
Event ID: 11
The driver detected a controller error on \Device\Harddisk0.
Event ID: 24800
Logical drive 1, configured on
Array Controller in slot 2, returned a fatal error on a read/write request on the volume.
Logical block address dbcd40, block count 8, command 20, drive bus 1 and Drive Id
So I am guessing the problem lies with the HDD and Replication from DC02 to DC01.
Event ID: 1084
Source: NTDS Replication
Internal event: Active Directory could not update the following object with changes received from the following source domain controller. This is because an error occurred during the application of the changes to Active Directory on the domain controller.
CN=ICT01,OU=ICT Suite,OU=School Computers,DC=server,DC=local
Source domain controller:
Synchronization of the local domain controller with the source domain controller is blocked until this update problem is corrected.
This operation will be tried again at the next scheduled replication.
Restart the local domain controller if this condition appears to be related to low system resources (for example, low physical or virtual memory).
1127 While accessing the hard disk, a disk operation failed even after retries.
IYO do you think the HDD is failing or is it windows thinking it is due to other problems?