HD not detected

Fujitsu Fujitsu sata internal hard drive...
July 11, 2010 at 11:28:01
Specs: Windows 7
* although it is an internal 2.5 HDD, it is in a
external enclosure*
My hard drive use to work fine. It was very
dependable. But, when my computer died, i
needed to make it a bootable HDD to reinstall
Windows. It worked, but now I cannot format
the hard drive because it is not deteched by
Windows. It is not in device manager or
Explorer. The light on the enclosure does turn
on when I plug it in, so it is getting power.
Anyone know what might be up?

*as another note, sometimes my computer
displays a error pop up that "USB device not
recognized" even when there is nothing
plugged in*

See More: HD not detected

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July 11, 2010 at 11:36:19
Troubleshooting USB device problems including for flash drives, external drives, memory cards.
See Response 1:

Check that out first.

Rarely, not all the ports on the back of a desktop case may be able to supply 500ma each.

If you have a desktop computer, Note that I answered a Topic on this site recently where a guy had an external drive, which does require the full 500ma, connected to a port on the back of a desktop case - it would not work properly when a webcam was in the port next to it, but it worked fine when the webcam was unplugged. Ports on the back of a desktop case often have two ports connected to the same USB controller module that are ports one above the other - you could try connecting the cable to one of those and leaving the other un-used.

If you are CERTAIN all of those possibilities don't apply, you could test the hard drive, but Toshiba does not have hard drive diagnostics for their drives.
Seagate's harddrive diagnostics will test any brand of hard drive but can only attempt to fix Seagate or Maxtor drives (by filling the drive with zeros which wipes all the data), and only the Windows version of it can test hard drives when they're installed in an external enclosure - you would need to test the external drive when it's connected to another computer (and it's being recognized by the mboard's bios, or course).

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July 11, 2010 at 11:38:52
thx but that doesn't help me because it is a laptop and this HD
worked fine on this same computer before

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July 11, 2010 at 11:47:44
Only that one paragraph applies to only desktop computers!

READ ALL of the info at the link in Response 1 - one of the things mentioned is almost always what is wrong !

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July 11, 2010 at 12:13:40
Other findings.... the cord that always worked with it doesn't
change anything, nor does the usb cable for my HDD camcorder.
Neither plug works in another ACER Aspire laptop with windows
vista as well,

Let's say I did hot unplug it, which I may have i do not remember,
how would I fix that problem?

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