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Windows 7: External Hard Drive Not Recognised Following Windows Update


14 Apr 2011   #1

Premium 64 bit
 
 
External Hard Drive Not Recognised Following Windows Update

Hi,

I'm new here, so please don't shout at me if I say something stupid.

Anyway, here's my problem:

I have a Maxtor 500GB stand alone hard drive which I originally bought for a Vista laptop, but have also been using it on my new Windows 7 laptop.

It has been absolutely fine for the 6 months that I've been on Windows 7, but today Windows Update decided that I needed 27 (count 'em!) updates to be installed an run - mostly for MS Office.

Anyway, the updates all installed and I restarted upon request, but since then my Maxtor hard drive has not been recognised.

A USB Unknown Device error appears, it doesn't list the drive in My Computer, and only appears in Device Manager as Unknown Device.

Any ideas of how to resolve this would be greatly appreciated, as I have a large number of important documents on that drive which I need to access relatively urgently.

many thanks

Greg


My System SpecsSystem Spec
.

14 Apr 2011   #2

XP / Win7 x64 Pro
 
 

Is it connected via USB or eSata?

In the meantime, try right clicking on My Computer, Manage, Device Manager, then right click on the top-most entry and select "Scan for Hardware Changes".
My System SpecsSystem Spec
14 Apr 2011   #3

Premium 64 bit
 
 

Hi,

It's connected via USB (as it always was when it worked).

I've attempted the scan for hardware changes, but it didn't affect it.

thanks
My System SpecsSystem Spec
.


14 Apr 2011   #4

XP / Win7 x64 Pro
 
 

Click on the start Orb, type "diskmgmt.msc", and hit enter. Is your external drive shown in there?
My System SpecsSystem Spec
14 Apr 2011   #5

Windows 7 Ultimate x86
 
 

Did you try to unplug it, shut down the power (if it has an external power source that is)
power it back up and connect to a different USB port yet?
I have to do that with my externals ~ once a month or so

BTW: are you sure the drive was running? For some reason they sometimes seem to miss the startup command

-DG
My System SpecsSystem Spec
14 Apr 2011   #6

Premium 64 bit
 
 

No, I tried that earlier.

It recognised my external DVD drive and iPod that were connected though.
My System SpecsSystem Spec
14 Apr 2011   #7

Premium 64 bit
 
 

Quote   Quote: Originally Posted by SledgeDG View Post
Did you try to unplug it, shut down the power (if it has an external power source that is)
power it back up and connect to a different USB port yet?
I have to do that with my externals ~ once a month or so

BTW: are you sure the drive was running? For some reason they sometimes seem to miss the startup command

-DG
Yes, I always go for the turn it off and back on again option first!

It seems to be something that was caused by the Windows Update specifically.
My System SpecsSystem Spec
14 Apr 2011   #8

XP / Win7 x64 Pro
 
 

Go back to Device Manager, right click on the Unknown Device and Uninstall. Then Scan for Hardware Changes again. See if that works.
My System SpecsSystem Spec
14 Apr 2011   #9

Premium 64 bit
 
 

Quote   Quote: Originally Posted by FliGi7 View Post
Go back to Device Manager, right click on the Unknown Device and Uninstall. Then Scan for Hardware Changes again. See if that works.
Nothing again, I'm afraid.
My System SpecsSystem Spec
14 Apr 2011   #10

XP / Win7 x64 Pro
 
 

(In my best tech support voice) Have you rebooted the computer since this started happening?
My System SpecsSystem Spec
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 External Hard Drive Not Recognised Following Windows Update




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