Question about SanDisk Sansa e250 MP3 Player

1 Answer

Sansa 250e computer recognition issue

I am having issues with computers not recognizing the unit. It usually sees an "unknown USB device." I've had a few times where it recognized the unit and I was able to put music on it etc. I have toggled the USB mode on the unit to the Mass Data setting. Any ideas?

Posted by troubled01 on

  • Anonymous Dec 31, 2007

    My SanDisk Sansa e250 does not regognize the usb port?

×

Ad

1 Answer

moparman629

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Make sure your using a usb 2.0 port

Posted on Jan 03, 2008

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Laptop not recognizing device when plugged into laptop how to fix


The computer is not recognizing the device because the appropriate software or driver is not installed on the device.

Most of the time when you connect a smartphone into a compatible laptop the device drivers or software automatically install, so the laptop may recognize the smartphone.

Here are some possibilities as to why the device is not recognized.

1) The USB port is bad.
2) The USB port is not activated
3) One of the devices does not support the other

Here are a few possible troubleshooting solutions:

1) Go to the smartphone manufactures website and download and install the updated device driver and software then plug in the device to see if it is recognized.
2) (if Windows OS) Go to the Device Manager to see if the device is showing up when it's plugged in. If you see the device in device manager right click the device and choose to update the driver.
3) (if Windows OS) Additionally, in device manager you can check your device's USB ports to see if there is an issue with the ports that may be resulting in the smartphone not being recognized. You can choose to re-enable the USB ports or update the software for the USB ports.

Hopes that helps resolve your issues.

Open Device Manager Windows Help

I’m happy to help further over the phone at https://www.6ya.com/expert/james_d4449ffdf318a2c3

Nov 07, 2015 | Acer Computers & Internet

1 Answer

The computer can not recognize drive (unknown USB device).


Method 1 - Unplug Computer So how did I finally fix the problem? Well, if you are lucky, it's a super simple solution! Try this method first and if it works, you'll have saved a lot of time.
Simply unplug your computer from the power supply. Yes that is it! Note that this does not mean just turning off your computer using the power button because most modern computers don't actually turn off completely and the motherboard will still get power. This is useful sometimes if you want to remotely wake up a computer, etc.
The motherboard is where all of hardware of the computer connects to, including the USB ports. Sometimes the motherboard needs to be "rebooted" because things can go wrong, i.e. all or some USB ports suddenly stop working. The small microprocessor on the motherboard will reload the drivers and your USB ports should hopefully be recognizing devices again.
So first turn off your computer using the Shut Down option in Windows or pressing the power button and then UNPLUG the PC from the wall outlet. Let it sit for several minutes and then plug it back in.
Method 2 - Update Device Driver If Windows is not able to recognize the device, you may also see in Device Manager that the device shows up as an "Unknown Device". You can get to Device Manager by clicking on Start and typing in devmgmt.msc or by going to Control Panel and clicking on Device Manager.
In that case, you should right-click on Unknown Device, click on Properties, then the Driver tab and then click Update Driver.

If this doesn't work, you can also try to download the driver for your device from the manufacturer's website. If the USB device is just a flash drive, then it's probably not a driver issue. However, if you are installing a USB printer, drawing pad, etc, then it might be worth downloading the driver for that specific device.

Method 3 - Restart & Disconnect USB Devices The next thing you can try is to disconnect all USB devices and then restart the machine. once you have restarted, try to connect the USB device that was causing the problem.
If that particular USB port doesn't recognize it, try another one. If the device is recognized by a different USB port, there could be a hardware problem with one of the USB ports. If no USB port recognizes the device, then keep reading because it's probably something else.

Method 4 - USB Root Hub Another thing you can try is to open Device Manager, expand USB Serial Bus Controllers, right-click on USB Root Hub and then click on Properties.
Click on the Power Management tab and uncheck the Allow the computer to turn off this device to save power box. If you have more than one USB Root Hub listed, you need to repeat these steps for each one.
Click OK and then restart your computer. Try to reconnect the USB device and see if it is recognized. If not, go back to the power management tab for each one and check the box again. If it does recognize the device, then leave them unchecked.

Method 5 - Connect Directly to PC A friend of mine ran into this issue and the cause ended up being his USB hub. He only had three USB ports on his computer, so he bought a hub where he could connect an additional 8 USB devices.
I guess this proved too much for his computer and it just started sporadically not recognizing various devices. After removing the hub and connecting the device directly to the computer, it worked just fine.
We haven't really been able to find any other solution to this problem other than reducing the number of items connected to the hub. Actually, one other solution worked, but it meant having to buy a new USB hub with more power.
If you are having this problem with Windows 8 or Windows 8.1, then you might be in luck. Microsoft has released a fix for Windows 8 not detecting USB devices properly. Make sure to install this hotfix if running Windows 8.
Method 6 - USB Troubleshooter If nothing has worked so far, you can download the Windows USB Troubleshooter Fixit tool. It's a free tool that works with Windows XP, Vista and 7.
You can either have the troubleshooter fix the problems for you or select the fixes yourself. I would just let it fix them for you since the choices can sometimes be confusing and technical for the novice user.
Method 7 - Update Generic USB Hub If you are getting the Unknown Device error in Device Manager, you can also try one other thing. Open Device Manager and then expand Universal Serial Bus Controllers.
You should see at least one item called Generic USB Hub. On some computers, you might see two, three or more of these. Right-click on the first one and choose Update Driver Software.
When the update dialog pops up, choose Browse my computer for driver software.
When the update dialog pops up, choose Browse my computer for driver software.

Jul 10, 2015 | Transcend StoreJet 25 750GB USB Hard Drive

1 Answer

Dell D620 USB device not recognized


Call Dell customer Support Number 1-800-204-4427 if your dell laptop, computer, printer and tablet facing technical problems. Our dell technical support experts will help you out within no time.
Dell Technical Support Phone Number 1 800 204 4427 USA Canada

May 23, 2017 | Dell Latitude D620 Notebook

1 Answer

Winxp sp3 andwin7 cannot recognized its USB adapter saying that it is an unknown device, i've tried to remove it from device manager and reboot, i also tried to update the driver through windows update...


The easiest way to figure out what is going on is to try the adapter on a different computer. If it is still good it will be detected. Usually when a usb device fails it may be recognized or is recognized only as a usb device but it will not work. You don;t have to install any drivers just to test this on another computer unless you want to make sure it is fully functional. It is also possible that the usb ports on the computer are not working or one isn't. Simpley use on of the other ports.The usb port controller usually operate a pair of usb ports so try all the ports. You may get a problem with one port or pair but rarely all at the same time.

I think you will find that the adapter itself is your problem and will probably need to be replaced.

Sep 15, 2011 | EnGenius EUB-9701EXT2 Pre-802.11n Wireless...

1 Answer

Every time I plug it in first it says new device found then unknown device after it says one of the USB devices attached to this computer has malfunctioned, and Windows does not recognize it.


Unfortunately that usually means that the drive has gone bad. Try using it in another pc- if the issue repeats, the flash drive has gone bad.

I’m happy to help further over the phone at https://www.6ya.com/expert/susan_42b401e0b1603d8a

Dec 16, 2010 | Dane-Elec DaneElec 4GB USB Drive Copper...

2 Answers

Samsung YP-U3 is not recognized by computer


it is not appering in my copmuters but it is charging.

Jul 23, 2009 | Samsung YP-U3 MP3 Player

1 Answer

Usb device not recognize


You mentioned that you uninstalled the unknown device from the Device manager. If you uninstall it then connected your usb flash drive you will see an error again on your device manager. This means that the driver for your usb port is not properly installed.

To install it, visit dell website, look for the model of your machine and locate the driver, download it then install from your machine.

Jun 02, 2009 | Dell Inspiron 6400 Notebook

1 Answer

Windows does not recognize USB connection to the SpeedStream 6520- malfanctioning


try using different USB port. if the it is unknown device. means the machine didn't recognized the device. you may have to install the device driver. (windows is a funny thing).

Nov 05, 2008 | Siemens SpeedStream Modem (4100) (SS4100)

Not finding what you are looking for?
SanDisk Sansa e250 MP3 Player Logo

64 people viewed this question

Ask a Question

Usually answered in minutes!

Top SanDisk Audio Players & Recorders Experts

ThaMp3Doctor
ThaMp3Doctor

Level 3 Expert

8597 Answers

Ekse

Level 3 Expert

13434 Answers

Geoff

Level 3 Expert

562 Answers

Are you a SanDisk Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...