Ursprünglicher Beitrag von: Dan ,
I think your facing a SATA I/O issue here the ST2000DM001 is a SATA III (6.0 Gb/s) drive, this system only offers a SATA II (3.0 Gb/s) interface. Depending on which version you will have either a ATI Radeon HD 4670 or Radeon HD 4850 GPU, but when you are running in Safe Mode this series uses the Intel EFI driver in compatibility mode. with is why it works in safe mode. Try a known SATA II drive to see what it does.