usb works with flash drive but not external drives

Posted on 2014-10-14
Last Modified: 2014-10-20
any idea what could cause that......this is my friend pc and i want him to give me some stuff but any external does not work on his pc....only a flash drive would work

he running windows 7 ultimate.....
Question by:slingingshot15
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LVL 13

Expert Comment

ID: 40380896
Has different usb ports been tried? Does the external drive work in another PC? Are you sure when you plug the external drive in that windows aint looking for a driver for it? (if this is the case then by the time in the bottom right corner you should see an icon with a green ball going round and round then you click this and skip looking for driver from Windows updates.

Author Comment

ID: 40380909
Yea different ports are tried and the drive works on another do not get any searching for driver at all
LVL 13

Expert Comment

ID: 40380915
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LVL 36

Expert Comment

ID: 40380940
Did your external drive come with an external power supply? Did you use it when you were at your friend's?

Author Comment

ID: 40380948
Its plug and play

He tried more than 1 external but it don't work

Only flash drives work
LVL 36

Accepted Solution

Kimputer earned 167 total points
ID: 40380954
His pc might be starting to fail on him, with the USB ports providing less power than is needed (usb pen drives need less power than hard disks).

Assisted Solution

MaestroOO7 earned 167 total points
ID: 40380960
Hi slingingshot15,

Try this cable: double usb cable for more power

When you add the usb disk, go to: diskmgmt.msc  check if the disk is there but does not automatically get a drive letter, give the disk a drive letter and you can reach with the explorer.

If this does not work, connect the disk to an other system in the same network, create a Folder share on it, go to the system where you can not connect it with and connect to the share(on the system with the disk connected to it..).

Good luck
LVL 92

Assisted Solution

nobus earned 166 total points
ID: 40381517
i also think your external drives do not have their own power supply; and the laptop does not provide enough power for it ( a flash ram stick uses very little power, that's why these work)

if they don('t have their own power - use a powered usb hub; find here a selection :

then they should work !

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