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Windows 7: External Hard Drive not Detected


09 Sep 2012   #1

windows 7 x64
 
 
External Hard Drive not Detected

I have a small 50gb HHD powered from USB

It will connect to my laptop running windows 7 home premium but not my pc running windows 7 professional

When plugged into my pc by usb the Disk does not power up and spin (the light does come on)

There is no recognition of it in my computer, device manager or disk management

Ive tried

Reinstalling USB ports & Drivers
Updating BIOS
Reinstalling USBSTOR.INF file
Formatting drive on laptop then connecting
Trying different USB cable
Cleaning up all ghost USB device drivers
Connecting before PC startup and while running

Anybody got any ideas of how to fix this?

With it connecting to my laptop im thinking its a driver or windows 7 professional problem but not sure


My System SpecsSystem Spec
.

09 Sep 2012   #2

Microsoft Community Contributor Award Recipient

Windows 7 Ult. x64 Windows 8.1 x64
 
 

Quote   Quote: Originally Posted by paddi23 View Post
Ive tried

Reinstalling USB ports & Drivers
Updating BIOS
Reinstalling USBSTOR.INF file
Formatting drive on laptop then connecting
Trying different USB cable
Cleaning up all ghost USB device drivers
Connecting before PC startup and while running
Hi,

You didn't specifically mention it, but can we assume you also tried a different USB port on the PC running Professional? Are you sure its the USB2 and not USB3 port?

Do both the laptop and PC run 32 bit or 64 bit?

Do you know the make and model of the external HDD?

Regards,
Golden
My System SpecsSystem Spec
09 Sep 2012   #3

windows 7 x64
 
 

Ive tried all 6 usb ports

they both run on x64

The hdd is from an old laptop in an enclosure

It says seagate momentus 5400.2

Googled it and it says it does not need any drivers so must be a windows problem
My System SpecsSystem Spec
.


09 Sep 2012   #4

Microsoft Community Contributor Award Recipient

Windows 7 Ult. x64 Windows 8.1 x64
 
 

Hi,

I think its more likely hardware related (the difference between the laptop and desktop). Can you plug it in, then reboot your PC, enter the BIOS and see if the disk is listed as available to boot from? It might show up as an external USB device.

Regards,
Golden
My System SpecsSystem Spec
09 Sep 2012   #5

windows 7 x64
 
 

The drive does not show up in BIOS

I have 3 internal drives installed maybe this could be the problem?

2 SATA & 1 IDE
My System SpecsSystem Spec
09 Sep 2012   #6

Microsoft Community Contributor Award Recipient

Windows 7 Ult. x64 Windows 8.1 x64
 
 

Mmm. Lets check something else, plug in a different USB drive/flash drive into the same port. Enter the BIOS again, and see if that device is shown as available to boot from.

Regards,
Golden
My System SpecsSystem Spec
09 Sep 2012   #7

windows 7 x64
 
 

Sandisk USB flash drive shows on BIOS
My System SpecsSystem Spec
09 Sep 2012   #8

windows 7 x64
 
 

Now im thinking it might be a power problem as the HDD doesn't seem to start at all and maybe thats why the PC doesn't recognise it.

There is no power problem with the laptop recognising it

I turned off power management in the USB root with no luck, also connected the HDD with a Y cable GGGGRRRRRR

Running out of ideas here
My System SpecsSystem Spec
09 Sep 2012   #9

Win 7 Pro 64-bit 7601
 
 

try connecting it through a USB hub
My System SpecsSystem Spec
09 Sep 2012   #10

windows 7 x64
 
 

I dont have a USB hub to hand
My System SpecsSystem Spec
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 External Hard Drive not Detected




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