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Windows 7: USB previously working not recognized

22 Jan 2013   #1

Windows 7 enterprise 64bit
USB previously working not recognized

Hi everybody,

I read the topics in the forum, but I did not found something that suits my needs, so I start a new thread.

I'm running a Windows 7 Enterprise 64bit on a nHP EliteBook 8470p laptop, and I'm experiencing a strange issue.
Connecting a USB device to the port, it works properly for some time. At a certain moment, while it is still plugged, I get an error of USB malfunction (code 43).
Since then, when I try to reconnect the device, it always failed with the below error message:

Currently, this hardware device is not connected to the computer. (Code 45)

and I'm not able to succesfully reconnect device to my laptop any more.

The same things happened with two different USB devices, a pendrive and an external HDD.
In addiciton, I've tried both of them on two other different laptops running the same OS (Win 7 Enterprise 64bit), and they work without any issue.

Can anyone help me with any idea?

Thanks a lot


My System SpecsSystem Spec
22 Jan 2013   #2

Desk1 7 Home Prem / Desk2 10 Pro / Main lap Asus ROG 10 Pro 2 laptop Toshiba 7 Pro Asus P2520 7 & 10

Hello and welcome Matteo mate have you tried updating the drivers for the USB ports see my pic.

Attached Images
USB previously working not recognized-usb.png 
My System SpecsSystem Spec
23 Jan 2013   #3

Windows 7 enterprise 64bit

Thanks a lot ICit2lol for your suggest, but I have already tried that way and it doesn't work.

Anyway, I have some update.
After further investigation and some attempts, I think that the real issue I'm experiencing is the following:

The system somehow loses the drivers for the USB device (actually only storage devices, mouse and keyboard is working properly), and did not recognize them any more.
In addiction, when I reconnect the device, system fails in installing drivers. The same happens with PC which device has never been connected to (i.e. my colleague one), but not with PC which device is usually connected to (i.e. my two other PC I mentioned before).

Again, thanks for any idea...

My System SpecsSystem Spec


 USB previously working not recognized

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