Sansa e250r not being read by my computer

how do i delete music from my mp3 player from my pc music files

Get software from Sandisk's website

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

god help me....
buddy you just got to do un hide invisible folders and files from the tools option in your windows.. then connect your sansa to the pc.. and open a folder called music.. and delete the songs
player should be in MSC mode

Reformat the player and reload

you might want to try right clicking on your mp3 icon while in rhapsody and clicking format device...

Either the device is bad, the pc port is bad, or the software is faulty. Try connecting to different usb port, then a usb port on a different pc with a compatible os. If still not recognized, then there is physical damage to player.

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 the 4gb micro SD is a high capacity SD (it will say micro SDHC on it) your player may not be able to read SDHC cards, my sansa can't because it's the 'older version' it will read 2gb and below micro SD cards though (it sucked when I found out because I had just bought a 6gb micro SDHC)

Hi tater. Hmmm. The product category you selected is for a Standard E260. But if your player is an E250R (Rhapsody player), here's a set of procedures that might help you. Deleting songs from your E250R can be done in 2 ways: By using Windows Media Player 10 or 11, or by browsing the player through Windows Explorer. Before you delete files, though, it's important to know that your player comes in 2 modes: "Rhapsody" and "PlaysForSure". The reason why is that music files saved in one mode would not be seen in the other mode, and vice versa. Therefore, if you can't find the music files in your player, switch to the other mode. Here's how to do it: Use the "Menu" button to navigate the player as follows: Menu > Settings > Mode > This will give you the option of: "Rhapsody" and "PlaysForSure". Here's how to delete your songs: (1) By Using WIndows Media Player: > Plug your Sansa to your computer and open your Windows Media Player. > If your Windows Media Player is version 10, then click on the "Sync" tab and you should see your player ("E250R") on the right pane along with its folders, named "Data" and "Media" or "Music". Expand the "Media" folder and you'll see the "Music" folder containing your songs. Right-click on a song and select "Remove" to delete them. > If your Windows Media Player is version 11, then either click on the "Sync" or "Library" tab and you'll see your player listed on the left pane. The music files will be displayed on the center window. Right-click on a song and select "Delete" to delete the songs. (2) By browsing the player in Windows Explorer Note: the folders containing the music files on your player are "Hidden" and you would need to set your Windows Explorer to show "Hidden Files and Folders". Open your Explorer, select "Tools" on the top menu, select "Folder Options", select the "View" tab and enable the "Show Hidden Files and Folders" radio button. > Plug your Sansa to your computer and open your Windows Explorer > If your player is in "PlaysForSure" mode, then your player will be recognized as a "Portable Media Device". Double left-click on your Sansa E250R and you'll see 2 sub-folders named "Data" and "Media". Open the "Media" folder and you'll find sub-folders normally named after the Artist. Your songs are located on those Artist folders. Delete them by using the keyboard "Delete" key or right-click the file and select "Delete" > If your player is in "Rhapsody" mode, then your player will be recognized as a "Removable Drive" with a drive letter. Double left-click on your Sansa E250R and you'll see the following sub-folders: "Albums", "Music", "Photo", "Pictures", "Playlist", etc. Your songs can be found in the "Music" sub-folder. Delete them by using the keyboard "Delete" key or right-click the file and select "Delete" I hope this procedure helps. A bit lengthy but, hey, it worked for me (lol).

Use Windows Media Player

Use Media Monkey instead, or change Windows Media Player's configuration, so that it sees more songs.