Seagate Hard drive

have you dropped it? it could be any number of disc errors, two of the most common errors are caused by viruses and dropping. try putting the hard drive in the freezer for a day or so in a moisture and static resistant bag. just a possibly remedy, if that doesn't work, try removing the casing on the hd and setting it as a secondary drive after you plug it inside a desktop computer.

This is likely due to power consumption, if a hub doesn't have it's own power adapter, then it is drawing bus power from your computer, and will not have enough power to drive larger devices.

If you don't hear any other weird sounds coming from the drive, you need to replace the logic board on the hard drive. Find an identical hard drive part on eBay and replace the logic board on the hard drive and everything will be working 100%.
Good luck!

Do an update from the manufacture of your computer, could be just a driver issue, Or that is USB2.

your drive is already defective. if you have important files in there, you cannot retrieve it.

remove hard-drive and put it start in to your computer this sounds hard but isn`t. it sounds as the internal board has gone.

You better check with the Seagate people. This seems to be a problem with the casing. And since you're under warranty, you can get a replacement.

You need to get a Seagate Harddisk Utility software to check the disk intergrity.

Although hardware issues like can sometimes be very difficult to fix due to the impact on a volatile component on the harddisk which are most times not replaceable

i want drive freeagent pro 500 gb firewere400,usb2.0, eSATA

TRY THAT EXTERNAL DRIVE IN OTHER PC AND CHECK IF IT IS RECOGNISED THERE, BECAUSE IF IT IS NOT RECOGNISED THERE ALSO THEN LIKELY YOUR CASING IDE CONNECTOR *** CONVERTER HOUSING HAS PACKED UP.