external hardisk is not recognised by computer but it is shown in diskmanagement

mouni

Honorable
Jun 29, 2013
1
0
10,510
hello,
my external hardisk (my passport model-wdbaaa3200abk-nesn) when it is connected to system it is not recognised on computer windows xp .i tried it on other systems but no use. hard disk is showed in diskmanagement but when i right click on it it shows only "help" option and moreover the hardisk is not shown any letter.many,files and pictures are stored in it.please help anyone