Question about SanDisk 1GB Cruzer Titanium USB Flash Drive (413072) Hard Drive

3 Answers

USB device not recognized


I have my Cruzer Titanium for a year and all of a sudden it stopped working. When I plug it in USB port on any computer a blue light on him lights up for a moment and I get mesage: USB device not recognized. What kind of problem is this?


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  • Rob_LA Feb 11, 2008

    I have a sandisk cruzer, titanium 512mb.

    Model: SDCZ3 512

    I have used this to store massive amounts of data that I frequently need to access, and have been able to access the data on the 3 computers I regularly use...until last week.

    Last week, when I plugged the device into my computer's USB, I received the following message:
    "USB Device Not Recognized"

    After double clicking on this message, I got the USB Root Hub. The last item on the tree stated:
    "Unknown Device."

    I double-clicked on the unknown device, and in the Device Status box, received the following message:
    "No Drivers installed for this device. If you are having problems with this device,
    click Troubleshoot to start the troubleshooter."

    I attempted to troubleshoot, but the device remains unrecognized. How can I access the data I have stored on this device?

    It is all well and good for SanDisk techs to say it is corrupted, but what about all of the data stored and all of the time and money lost. It seems that this is not a problem unique to me but one that many people have experienced.

    Is SanDisk simply an inferior product?



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Thank you so much USCmed2! Your solution worked and we are in the process of backing it up as we speak. You deserve some sort of reward... site reward or something. Kudos and thumbs up and worship smilies etc... :D

Posted on Jan 25, 2008

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Manga, I have the same problem with my Sandisk Titanium Mini Cruzer 4GB just 4 days ago. It worked well in all 5 different computers which I use on a regular basis then 4 days ago, I got the same error message you got with yours: "USB device not recognized" and the blue light turns off after 1 or 2 seconds just like yours. I called sandisk and spoke with 2 different techs and all told me what MARKEVANS posting advised..."its corrupted, get a new one."

For me getting a new one is of course easy it's the data that is so important as I have lost data that can cost me thousands. Out of desperation, I called a data recovery group to try to recover data...this option is costly as well ($500-1000). So out of sheer desperation just today, I plugged the Cruzer into one of the computer at work which has a USB hub. I was amazed to find that on the hub, IT WORKED. I immediately transfered all the data to the hard drive. None of the data was lost. Out of curiosity, I pulled out this hub and plugged it into the computer that didnt work and sure enough, the cruzer drive was recognized once again. I still don't know why using the hub works but sounds like a circuitry problem. Of course I will get a replacement but if data is important to you, you might want to try this with a USB hub and see if it works for you.

Good luck

Posted on Jan 18, 2008

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not fixable.
device can not tell os what it is. that is the most basic of functions.
without id, it can not set configuration needed to access data.
probably already lost data anyway.
replace is about the only option.

sorry for the news
good luck

Posted on Dec 23, 2007

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Posted on Jan 02, 2017

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1 Answer

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Simply UNPLUG YOUR COMPUTER FROM THE POWER SUPPLY. Yes that's it! Note that this does not mean just turning off your computer because modern computers don't really turn off when you press the power button as the motherboard still gets power.

First to explain, the motherboard is where all of hardware of the computer is connected to, including the USB ports. Sometimes the motherboard needs to be "rebooted" also because something can go wrong, i.e. all your USB ports suddenly stop working. The small microprocessor on the motherboard will reload the drivers and your USB ports should be back to recognizing all devices!

So first turn off your computer using Shut Down or pressing the power button and then UNPLUG it from the wall outlet. Let it sit for about a minute and then plug it back in.
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You have lost all the data as it is. Unfortunately, you may have pulled the cruzer from the usb port by hand without using the EJECT Format. You should always EJECT a USB Dongle first to avoid STATIC Charge. Static erases the formatted device and washes away all data. In the Winter this condition is more active than when humidity is high. In many cases, the drive can not be formatted again.

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go to my documents and select the removable disk drive usually f:, if that does not work switch between a drive and c drive. Usually it takes a second for the computer to realize that the USB drive is being used and for it to be read. Let me know how it goes and if you need other troubleshooting tools.

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