Western Digital 250GB MyBook

Make sure it's plugged in to the computer and wall and that you have any necessary drivers installed.

I don't have a photo of the AC adapter, but if you look on it the Voltage and Amperage specifications are;

Input: 100-240VAC / 50~60Hz
Output: 12VDC / 2A

This means the Input power can be from 100 volts to 240 Volts AC, and at 50 to 60 Hertz

The Output power is 12 Volts DC at no more than 2 Amp's. (Amperes)

Asian Power Devices Inc. has a model DA-24B12 that fits these specs.
Also a Wattac AC adapter model number - BAO362Zl-8-A01 will work.

Otherwise just use a 12 Volt, 2 Amp power pack, with a positive on center contact, and a 2mm pin hole

Disassemble the enclosure, and separate the disk-drive from the USB-to-disk-drive adapter. Connect the disk-drive as a "slave" drive in a desktop computer, and see if you can access the files.

Mine needed a new power cord. Then it worked fine.

Under Windows No there isnt a fix for this

try downloading device drivers from wd. has it been droped?

Format it with NTFS. FAT32 is limited to a max file size of 4gb and goes wacky with a drive size more than 62 GB..

seemd to me you have a defective drive. if it was bought new.. try looking for warranty

Try it on another USB and if no luck on another computer. If another computer recognizes it try reinstalling your chipset drivers.

100% faulty, 100% non repairable