Sounds like the drive was installed in a different setup previously?
Was the drive the only drive in the old system?
If not the boot rec may have been on the other drive, do you need the data on other partitions of the drive?
I built the new system using old HD's. The old system had c:\ = 1tb d:\ = 1tb e:\ = 2tb new system is c:\ = 1tb d:\ = 2tb E;\ = 1tb
I have two 1tb and one 2tb they are formated & partitioned as individual drives. Windows 7 repartitioned C: as 100 meg and 931gb then formated 931gb in nt, I have no idea what the 100 meg is for. Boot record should be on c:\ but not sure where it is.