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Windows 7: 2TB Seagate Expansion light flashing but not recognised

30 Dec 2013   #1

windows 7 64 bit home premium
2TB Seagate Expansion light flashing but not recognised


I have a problem with my seagate 2tb external hard drive.
when i connect the usb, i can hear it whizzing and the light flashes, but nothing comes up on the computer.

i have tried changing cables and adapters with no luck.
ive tried changing usb ports with no luck

ive tried going into disk management and it doesnt show up there either.

ive also downloaded the sea tools after googling the problem but nothing shows up there.

i recently transfered everything from a computer i sold over to the hard drive. i wanted to transfer it over to a second backup hard drive today but with no luck.

on he last use of the hard drive i did disconnect with the remove hardware safely option.

anyone give any suggestions please...

My System SpecsSystem Spec
30 Dec 2013   #2

Windows 7 Home Premium 32 bit

1. Does the computer read other USB drives or is it only this drive a problem?

2. Did you try connecting this expansion drive to another working computer?
My System SpecsSystem Spec
30 Dec 2013   #3

windows 7 64 bit home premium


yes the computer reads my other Buffalo 2tb drive

and i tried connecting the seqagate to a laptop but same problem

so im presuming its the hard drive at fault?
My System SpecsSystem Spec

30 Dec 2013   #4

Windows 7 Home Premium 32 bit

OK, it is quite obviously a problem with the expansion drive. You said you had changed the adapter and so I take it it is not a power problem.

The only solution I can think of in this case is to remove the hard drive from its casing, connect it as a second internal drive on a desktop hoping that the problem is in the interface electronics and not the HDD itself.

But wait to see if others can come up with a less painful solution to try.

EDIT: If you have no requirement of recovering data, you may consider getting a replacement if your drive is still under warranty.
My System SpecsSystem Spec
30 Dec 2013   #5

windows 7 64 bit home premium

ok will do
My System SpecsSystem Spec
30 Dec 2013   #6
Microsoft MVP

Windows 7 Ultimate X64 SP1

It does seem likely the external drive has died. I'd not try disassembling it, some of them don't have standard HDDs inside and have soldered on connections.
My System SpecsSystem Spec
30 Dec 2013   #7

Windows 7 Home Premium 32 bit

What Britton30 says may be true. May be not (with this drive). We do not know.

Can you please post the exact model no. of your Seagate Expansion drive?

Then may be someone who had actually skinned it out can tell what is inside and how connected. We can even try a google.

As I indicated, once you open it, you will void any warranty.

If it is out of warranty it shouldn't matter if you have to open it and see what best you can do unless someone comes up with a possible solution to try, without opening it.( Honestly I can't think of any.)

As I see it is a real difficult situation on which only you can decide.
My System SpecsSystem Spec
03 Jan 2014   #8

windows 7 64 bit home premium

ok quick update..

i went ahead and opened it because it was out of waaranty anyway... followed a tutorial from youtube to see how to open it.

i bought a dock t see if it would work with that and same problem. just the light flashes but will not come up on my computer or disk management.

i followed another solution on youtube via the commandprompt. and it said chkdsk not available for RAW drives.
does this mean the hdd has become RAW?

another thing that i have tried is on device manager, i uninstalled all the hidden greyed out disk drives and restarted.
i then got "other devices - usb" with a yellow triangle next to it. i tried to update driver but it says it cant find the drivers.

went to seagete to download the drivers but when i open the driver helper it doesnt recognise it.

please see inserted pictures

model number is ST320005EXD101-RK
seagate expansion 2tb

Attached Thumbnails
2TB Seagate Expansion light flashing but not recognised-model-number.png  
Attached Images
2TB Seagate Expansion light flashing but not recognised-dsk.png 2TB Seagate Expansion light flashing but not recognised-dskmgr.png 
My System SpecsSystem Spec
03 Jan 2014   #9

windows 7 64 bit home premium

ok everyone.. good news... i have managed to get it working again...yayyyyyyyyyyyyy

can i post external links here so anyone needing help can see the solutions too?
My System SpecsSystem Spec
07 Apr 2014   #10

-Windows 7 Ultimate x64

Hello! I think I have the same problem with my Seagate. My laptop was recognising the external drive until yesterday. Now it keeps showing an I/O error. Can you help me, please? What have you done to mke it working again?
My System SpecsSystem Spec

 2TB Seagate Expansion light flashing but not recognised

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