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Windows 7: Unknown Device Frustration

02 Aug 2009   #1
brandoncolorado

Windows 7
 
 
Unknown Device Frustration

Hi,

I have Windows 7 RC. I am having an annoying problem, and I cannot figure out how to solve it. Basically, any external media I attach to my netbook shows up as an "unknown device" in device manager and does not show up in my computer as a drive.

Relevant troubleshooting info:

1) This happens with USB drives that work in other computers
2) This happens with either USB port.
3) This happens with the internal Secure Digital Card reader.

I can't reinstall Windows 7 or install another operating system without some way to boot to the USB or SD.

Any ideas?

Thanks


My System SpecsSystem Spec
.
02 Aug 2009   #2
septprince

Window 7 build 7600, Xp pro(VM)
 
 

welcome brandoncolorado to Sevenforums.....

open device manager(while the device is in the usb port ) expand the universal serial bus controller and check if there is any exclamatory sign on the icon of Usb mass storage device.

post a screen shot if possible...
My System SpecsSystem Spec
02 Aug 2009   #3
brandoncolorado

Windows 7
 
 

Thanks for the quick reply.

To clarify, this doesn't only happen with USB drives, it also happens with SD cards.

I have attached two screenshots of the device manager. You can see the exclamation point under "other devices." This is the device that is added/removed each time I insert or remove some media.

Thanks for any advice.


Attached Images
Unknown Device Frustration-ss1.png Unknown Device Frustration-ss2.png 
My System SpecsSystem Spec
.

02 Aug 2009   #4
septprince

Window 7 build 7600, Xp pro(VM)
 
 

Try reinstalling the Usb mass storage device under universal serial bus controller.

And are you sure that it is not a loose connection..............
My System SpecsSystem Spec
02 Aug 2009   #5
brandoncolorado

Windows 7
 
 

Hey,


Thanks again. I actually just solved the problem by finding a solution on your forum. As it turns out, there is some bug. Here is what I did:

1) Copy the entire C:\Windows\INF folder to C:\NewFolder
2) Tell windows to search for the driver there instead of /INF
3) Blammo! It just works right away for both types of media.

This is a really annoying problem, but hopefully somebody finds this useful.

Thanks again
My System SpecsSystem Spec
03 Aug 2009   #6
septprince

Window 7 build 7600, Xp pro(VM)
 
 

I am glad it is fixed..........
My System SpecsSystem Spec
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 Unknown Device Frustration




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