Satellite A100 - material cannot be found via USB

Hello all,.

First I want to apologize for my bad English following (I am from the Germany).

I have my laptop for about two years. All my USB hardware worked.
But about a week ago, I tried to save data on my USB but my laptop could not match it.

There was just the message: "no known material. Installation was not correct. »
The effect is: I see the USB in the Solution Explorer, but when I open the file there is no datas (but the USB was not data always full).

Now I can not plug anything into the USB socket.
No USB, no camera box, no external hard drive.

There is no difference between these things, windows still shows the same message of failure...

Can someone help me please? I think there must be a pilot unit failure, but why he is one day to the next?
Thank you for your help (and willingness to try to understand my English ;)).

First of all, I must say that your English is not bad!

Now a few words about your question.
Try this;
-Disconnect all USB devices
-go to the Device Manager
-remove all USB ports, controllers
-restart the laptop

After restarting again the windows should recognize the new hardware and needs to be reinstalled all USB ports.
Then check again if you use USB devices.

Tags: Toshiba

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