My sansa e250

If you are using a USB connector [that connects extra ports to your computer] it sometimes doesnt work... so if possible hook the USB sansa cable to the main ports in the back of the server. It might also work to hook it in, and then go to 'My Computer' and see if it shows up there. Good Luck =]

I assume that you are running an older version of Windows from XP/2000. If you can get on the internet, go to Sansa's site and download the driver from there. Here is a link http://mp3support.sandisk.com/sansa/SMC

The device is supposed to refresh each time in case you put in a new memory card or added additional files. That's not the problem - this is: There are two connection settings in USB: MTP and MSC. For some reason MTP is the default, but it doesn't connect properly on all computers. Select MSC and plug the player in again, the computer will recognize sansa e250 but not show the driver just yet. It is installing recognition software (just basic drivers - nothing heavy) and it doesnt tell you what its doing until its complete. WAIT FOR IT. Once it is complete you will see both the sansa e250 and the removable memory slot in your "my computer" now you're good to go.

you cant. It isnt designed to read file formats. Only video, mp3/wav music, and pictures. I'm sorry but you need a sony reader or kindle for the type of files you want.

I think maybe it isnt connected to the computer corectly because it should go to the connected screen. try hooking it into the main USB ports.

Change USB mode to auto -IF it is avaialble in the settings menu - see manual for details.

Try diff. USB port first

Go to hardware --> device manager and see if there is a yellow exclamation bu usb port - if there is, right click and update driver

otherwise:
These are the most common methods for recovering Sandisk's Sansa Mp3 Players. I have been almost universally successful in recovering Sansa players using one or a combination of these methods. These methods do not work if you are having synchronization or music format issues - they are for recovering a player that will not power up, freezes, flashes, is not recognized by the computer, and a host of other issues.

Reset the Sansa Player first. On most models, restart is done by holding the power button in for 15 seconds or longer. Check your specific manual to be sure. The manuals are available from the Sansa website if they have been misplaced.
Download the Sansa Recovery Tool from the Sansa website.
Format - Erases Everything: Connect your Sansa player to the computer and open Windows Media Player. Click on the Sync tab. Pull down the drop down menu underneath the Sync tab by moving your cursor over the Sync tab and left clicking on the little black arrow underneath the Sync tab. Highlight "Sansa 1GB" (wording may vary slightly), and then select "Format." - this should erase everything.
Firmware Upgrade- Erases Everything: Get the latest firmware upgrade from Sansa - it updates the firmware and erases every song in the player all at once. Note: this method doesn't work if already have the latest firmware. Go to this website and click "Firmware Updater" to find out: http://www.sandisk.com/DriverDownload/driverList.asp
If these fail, then:
Try this: disconnect the player from the computer, turn it off, hold in the volume + button, and reconnect the player to the computer while holding the volume + button in. Keep holding the volume + button for an additional 5-50 seconds. Windows should eventually go into recovery mode and revive the player- it will pop up a window that says Found New Hardware Wizard.
If you get the problem where MTP Device keeps popping up continuously, uninstall the “MTP Device” by going to Start à Control Panel àSystem à Hardware à Device Manager (you computer may vary slightly, depending on Windows Version).
You may have to restart your computer after each of these methods to get them to work properly. Disconnect your Sansa player BEFORE shutting down your computer.
-Tha Mp3 Doctor

Hi there , in the settings menu in your player if you go into usb you can change it to msc mode and it will read as a normal usb drive so you can transfer songs etc

Hi-USB refers to the USB 2.0 standards. It appears your computer only has USB 1.* hardare on it's motherboard. If you have a free PC slot, you can buy a 2.0 USB upgrade card. It will speed up the transfer times between USB devices and your computer. As for your computer not "seeing" your sansa, try another USB cable. If that does not help, check under control panel/system/device manager to see if the device is properly installed. The sansa operates as a "removable drive" so you should see your player as another disk drive in windows explorer. If you have a drivers/installation CD-rom for your player reinstall them, or check the sansa website for possible newer updates. Good Luck!

Switch your player into MSC mode via Main Menu > Settings > USB mode. When the player is connected it will show as two drives, the player, and the microSD card just like a card reader. You can transfer files directly to the expansion card.