usb flash drive not recognized

2:51

1:50

2:26

1:34

1:57

3:11

1:20

4:17

کوتاه

12:52

10:19

12:52

2:26

1:51

6:48

8:14

7:31

7:59

11:48

2:13

3:56

3:21

1:45

7:30

7:30

8:10

8:14

4:26

9:49

کوتاه

6:09

4:22

7:30

4:04

5:25

2:15

3:07

5:47

8:35

5:15