Locked up sansa

There's a slide switch on the top of the unit, near the headphone jack. Slide it so as to cover the orange portion to unlock the unit.

I had the same problem when I connected to the computer. So I used my friends Labtop definite 2.0 usb. Did you try to update your sansa click on link and download install run connect sansa when asked.
(http://mp3support.sandisk.com/sansa/Installer/1082/SansaUpdaterInstall.exe)
this has the manual also Make sure USB mode is MSC I use my computer to drag and drop my music from my music folder to the sansa media folder.... Open my computer click on folder what ever folder has your music in it and drag to media folder and drop (click on the (+)where it say's sansa ) easier not to sync

I hope this works

You can download the software from the manufacturer's web site at http://www.sansa.com

Disengage the hold/lock button on top of the player.

You don't need Vista to install the Sansa Clip. Run the installation CD (or grab the software from Sandisk's website), and plug the player into your computer.

chech out for the lock key at he top at side of the earphone port.. it is lock key move it to unlock

First make sure the lock isn't engaged - slide the on switch "upwards," or toward the top of the mp3 player and hold in for 3-5 seconds.

Hold in the volume + button while it is disconnected from the computer, and then plug it into the computer while continuing to hold the volume + key. after several seconds (5-50), the "Found New Hardware Wizard" should pop up (when it pops up, you can release the volume + key) and Windows should go into recovery mode, and revive the player.

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/Retail/DriverDownloads.aspx
-Tha Mp3 Doctor

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

Maybe the hold button is on