Just recently, I have been experiencing problems with my Lacie 500GB Desktop USB Hard drive. When I boot up the computer, and power up the hard drive, a green light on the front lights up and the computer recognises the drive. However, after about 5 minutes or so, the light goes off and the drive disappears from "My Computer" and the device manager, and I cannot get it to recognise again. I turn the Lacie drive off at the mains for about 30 seconds and turn it on again. Again it works for about 5 minutes and the same thing happens. I have tried using a different USB cable, tried another power supply (as my brother has exactly the same drive) and tried using it on different computers, but to no avail. Does anyone have any ideas on why this is happening? Has the drive come to the end of its life? Any advice and info would be greatly appreciated. Thanks in advance.