When i turn on my ebm901 it shows on the screen to connect to usb thats all i can not do any thing

This is a Battery Issue as the Player is only Turning On when its Connected to the Computer!

The F20 Desktop Software and Service pack on the CD's from navman do not work, as you have seen. The solution is to go to the navman website and download this Service Pack

Be sure your f20 is connected to the USB cable and turned on displaying the USB Connection screen. Leave it on during the entire process.

Once downloaded, run this self extracting file and let it install automatically. After it is installed and ran.....you will see the same error again of failure to connect.

At this point you must reinstall the driver manually. Right click on your "My Computer icon, Select Devices, then properties on the navman. You should see a yellow "?" next to a statement "Unknown Device" in the USB devices. Click on the "Reinstall Driver" and select a specific location or the Have Disk button. The USB driver is now located in C:\program files\Navman\f20servicepack\USB directory.

You should get a button that now says Okay at the bottom, click onto it and allow the MS program to update the drivers. You should see the device screen change and say "This device is operating properly". You can then close the windows and run the F20 desktop program. It should connect then.

Please connect your samsung to PC using USB then disconnect the pairing from PC and don't disconnect them before get information on PC screen that they have been disconnected.

You may need to now reset the player, that may have been a bit much for it. To reset your Sansa Mp3 player. Slide and hold the Power switch up for approximately 20 seconds. Release the Power switch. To turn the player on, slide the Power switch up then release instantly. If that does not get your player working again, try and Format to clear any corrupt files that may be present.
http://www.fixya.com/support/r3962743-sansa_mp3_player_frozen_reset_format
-Also try to refresh the driver in your PC. Connect the Sansa player to the PC The screen on your player should turn on, show 'Connected' and indicate the battery charging or full. - If the player does not turn on try other USB ports or on another computer if one is readily available. Ensure you are connecting directly to the computer USB port and not to a USB hub. - If there is nothing showing on the screen and the player does show up in as a storage device in an explorer window, then the screen is just not working. If you receive the error "USB Device Not Recognized" on the computer, the player is most likely failed. Additional troubleshooting is unlikely to correct the problem. Check under Device Manager 1. Right-click My Computer, and select Manage. 2. Click Device Manager on the left pane. NOTE: Sansa MP3 Players can connect to your computer in MSC or MTP mode. >>>><<<Exceptions are Sansa Connect and Sansa Express which only use MTP mode. MTP mode is the recommended and default method for Sansa Players when used with Windows OS. The Sansa player will show up on Device Manager's right pane as: 1. USB Mass Storage device (if the player is set to MSC) 2. Portable Device (if the player is set to MTP mode) If there is a yellow exclamation point (!) or question mark (?) beside the device, try to refresh the drivers.
Refresh the drivers 1. Right-click the entry with the error mark, select Uninstall. 2. On the top menu, click Action then select Scan for hardware changes. NOTE: If a device with yellow exclamation point (!) continually appears and disappears, then the player is most likely failed. Connect using MSC mode Connecting in MSC mode will help determine if there is a problem with MTP mode or with the Auto Detect mode feature of the player. You can use Forced MSC mode or switch the player settings to MSC. Instructions to connect in Forced MSC mode are listed here: http://kb.sandisk.com/app/answers/detail/a_id/61 Instructions to switch player to MSC mode are listed here: http://kb.sandisk.com/app/answers/detail/a_id/207 If the player is detected in MSC mode but not when set to MTP mode, try to update or reinstall the Sansa firmware NOTE: Sansa Express and Sansa Connect do not have MSC mode. For Sansa Connect you can try reinstalling the firmware using the Connect Recovery Mode. Additional troubleshooting notes: If you have replaced the Sansa Player and you still have problems getting it to recognize in the computer, then you may need to try some additional troubleshooting. - Try connecting on another computer. - Try using a different USB cable - Try connecting to the back USB ports which may supply better power. - If only MTP mode is not working, try reinstalling Windows Media Player For Windows XP try also download and install the MTP Porting Kit

Try a different usb cable or mabey the actual usb port

use another USB connector and check clearly the USB connection is ok...

How do I get my computer to recoginze the connection of my USB?

i have the same problem with my camera it show 5foa 5f08 5e02 with the blue screen

Sounds like the power portion of the USB port is working but the data portion is not. My guess is that the drivers for the USB hub inside your machine are not installed, damaged or never installed. Check the "device manager" under "Universal Serial Bus Controllers". You might be able to fix it by deleting the hub. When you power off and power back up it should find the hub and reinstall the drivers.