as the title already announced lässte I only had problems with these drives. I have 4 * 500GB bought from dealer around the corner. All plates were running, but:
If a plate (1) at the start of the laptop / netbook (Asus, Toshiba, Lenovo) depends, needs these 2 minutes for the Bios and 5 minutes before the charging dots of Windows 7 appear.
Now like a like SUPPORT coming from WD and said the USB is registered as a boat. No it was not.
The fault lies quite simply in the construction of the plate. All laptops boot with the drive connected to a USB hub with external power supply without problems.
I have surrendered all and brought me Toshiba, so it funzt! These consume less power.