New st3750640a-rk and siig controller

if you external hdd does not work on any other computer other than yours . try opening it with a linux OS. u can Ubuntu live cd .. boot from it and run it live...connect your HDD .. i hope you can see you files then >>> good luck

Hello,

Check the drive with another computer. One with Vista and one with Windows 7 if possible.
This will tell you if there really is a problem or not.

Hope that helps

If you just added the disk to the PC, you need to prepare and format it before Windows will see it.
Options:
Download the "Seagate Seatools" from the Seagate website to prepare the disk
or
Type "Disk Management" in the search box and select the "Create and Format hard disk partitions". You should see the new disk in the list. Select the UNFORMATTED area, and create the partition and format it.
The Seagate program is a much easier option...

> I purchased

Brand-new, I presume?

> is it a failed HDD

Yes. Take it back to where you purchased it, and get them to replace it, under warranty.

> software problem

No. It shows-up in "disk-management" as a recognized, but not-yet-initialized, device.
Thus, all the software to support it has been correctly loaded.

Exercise the warranty.

There's not much troubelshooting you can do with a failed external disk. power off PC and hd and then disconnect all cables, wait 30 secs, power the PC on, let it boot to the OS, power the hard drive on and then connect. If the drive shows up but you still cannot access it or get weird property readings, it generally means the hd controller has failed. If the data's worth more than $1000, you can take it to a data recovery group like Ontrak or Cherry Systems, but otherwise, just get a new hd and restore whatever backups you have.

Check all your bios settings, make sure SATA is enabled. Also see if the drive can be installed on another machine.

Make sure your OS version can support SATA also.

Good Luck.

go into the bio's and turn the on board off

verify your bios settings with regards to what the pc is expecting in way of hard drive.
Do you have the luxury of another hard drive that you can try on this pc ? - this will 'suggest' where the problem rests.
Make sure the lead is fully located on the back of hard drive.
If possible - change the lead for a 'known working' lead (Maybe from the computer that your hard drive was recognized in)

if your system some virus hope it is not read......better you try any other some card reader or pen driver if it read you try other OS ....

Are the logic board model numbers the same? How about year and batch manufature? check on that.