My PC recently failed(the power supply went bad and replacing it
allowed the computer to turn on, but the monitor said no signal
detected so I had problems other than the power supply). I removed
the hard drive from the PC and bought a hard drive enclosure which I
have connected to my laptop via USB. However, I can't seem to get the
laptop to recognize the new hard drive. If I go to Device Manager and
click on Universal Serial Bus Controllers I see 'USB Mass Storage
Device' and when I check the properties the Device Status indicates
that the device is working properly.
I have also checked Disk Management under Computer Management and my
new external drive does not show up.
Any ideas on this would be appreciated!!
Does the enclosure have an external power supply and is it connected?
Drives often need more power than the usb port can supply.
Beyond that, there are a variety of other possible causes from being
hooked up incorrectly to a bad drive.
Beverly Howard [MS MVP-Mobile Devices]
The enclosure does have an external power supply. It powers up and I
can hear the hard drive spinning in the enclosure. And the green LED
light comes on at the front of the enclosure. The laptop is a Dell
Latitude, and I do get a warning message after plugging in the USB
that says "The number of hard disk drives in your system has
increased. This typically does NOT indicate a hardware failure.
Contact our help desk if you did not personally change your systems
hard disk drive configuration. "
I do fear that the hard drive is damaged. I guess the best way to
check that would be to get a known good drive and see if the laptop
recognizes that?
Jim:
In view of your past problem with the PC (I assume it was a desktop machine)
in which this HDD had been installed, it certainly sounds like the problem
may indeed be a defective HDD.
If you do have a "known good drive" at hand, that would be one way to test
whether the USB enclosure itself is not a problem. And what about your
desktop PC? Did you ever get that machine back to functioning? If you did,
obviously one thing to try is to connect the USB HDD to *that* machine for
testing purposes. But I guess you've already tried that or that PC still
isn't functioning, yes? And I don't suppose you have another PC available
that could be used to connect to the USB device.
You should download the HDD diagnostic utility from the manufacturer of your
HDD and test it out. As you may know, the diagnostic utility will take the
form of either a floppy disk or CD, both of which will be bootable. In some
cases, however, the diagnostic utility will not be able to test the drive
while it's a USB device; in those cases you would need to (temporarily)
install it in your (presumably) functioning desktop PC and test it that way.
Assuming the HDD is non-defective, you have tried another USB port on the
laptop, assuming one is available right? I assume you have a flash drive or
other USB device that you can connect to the laptop's USB port and no
problem there, right? And you've tried powering-on the USB device *both*
before & after the boot? And you're not using a USB extension cable, right?
I don't suppose there's any setting in the BIOS of your Dell's motherboard
that would impact on this problem, but check this out with your User Manual
info as it pertains to USB devices.
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