My drive is not read on my computer what is the problem?

[amr_elsayed]

i have 1 TB WD my passport ultra drive
when i attached to computer it is dont read on the system
and i cant use it
what is the problem ??
and plz can any one help me plz

[Joe_S]

What OS are you using? If Windows look in Disk Management and see if the drive shows there and has a letter assigned.
Joe