I need to replace my 2009 WD3200BEVT hard drive case. As its quite old, it uses the SATA 3Gb/s interface. I recently purchased a replacement case but when I connect it to the PC, the blue external hard drive light comes on, but there is no humming sound or connection to the PC. Usually the external drive is powered via the PC. I have tried different USB cables, different replacement cases, different ports and different PC’s – even the TV - but still the same result. Is there anything I can do to get this external drive working?