I cannot connect my HyperDrive to the computer via USB

Merely connecting the USB cable between the HyperDrive and the computer does not activate the USB connection. You will need to power up the device and select the option that activates USB connection.

Please refer to your HyperDrive user manual on how to connect the HyperDrive to the computer via USB.

If it does not work, try to:

1) Change the USB cable as it may be faulty
2) Connect the USB cable directly to (the back of) the computer and not via a USB hub
3) Connect the AC adapter, especially when the battery is low
4) Connect to different USB ports on the computer as the USB port may be faulty
5) Restart the computer
6) Try connecting to a different computer, as the USB connectivity issues may be caused by the computer
7) Reformat the hard drive with the HyperDrive, restart the device and try connecting to the computer again.

If you need to extract the files from the HyperDrive urgently, you can transfer the hard drve to an inexpensive external USB hard drive enclosure available at most computer or electronics stores:
http://www.newegg.com

You can find instructions in the user manual on how to safely install and remove the hard drive from the HyperDrive.

If you are unable to see the HyperDrive in Explorer (Windows) or Finder (Mac), but see it in Device Manager (Windows) or Disk Ultility (Mac), a file system error may be preventing the HyperDrive from successfully connecting to your computer. You may use ScanDisk (Windows) or Disk Ultility (Mac) to repair disk permissions. File system errors can occur when you improperly disconnect the HyperDrive from the computer. Formatting the HyperDrive hard drive will clear these file system errors. Please backup all your files on the hard drive as formatting will delete all the files on the hard drive.

If your HyperDrive supports this feature, you can copy data from the HyperDrive hard drive to the memory card.

Alternatively, we recommend PhotoRescue for software related data recovery
See: http://www.datarescue.com/photorescue/v3/

From our experience with various recovery software, PhotoRescue has proven to have the highest success rate in recovering the most data.

You can try the free demo and preview the recoverable data before purchasing the software.