My iRiver has stopped communicating with my PC

You must have the proper device driver installed... or your PC will not recognize it (won't know how to talk to it).

Thanks!!

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There may be a driver issue as I've personally had problems with my iRiver IFP mp3 player and would try to load the driver every time I connected the player to my Windows based computer.

Assuming you have a Windows based operating system, I would completely uninstall the iRiver Music Manager in add/remove programs in the control panel, restart the computer and try reinstalling the program again.

http://iriverinc.com/support/ultra/800.aspx

there is a setting somewhere that stops it charging when you connect it to a usb port on the computer.

Here's my shortcut:
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

Here is a suggestion from the iRiver website - you may want to visit that website, b/c their "Ask Alice" tech support feature is actually quite good:
The players come with a CD that contains drivers and software that enable the player to download data from a PC. Insert the CD in the computer's CD drive, and connect the player to the PC with the USB cable. (Help with USB cable connections) The PC should automatically detect the device. The New Hardware Installation Wizard will automatically launch and the installation process will start.
If the above procedure does not occur on your PC, please manually install the driver. Use the links below for instructions:

• iFP players - Windows 98SE/Me
• iFP players - Windows 2000/XP
• T Series players

If you still have trouble, the issue may be with the computer chipset. iriver has tested many PCs and discovered that this only occurs in a small number of main boards.

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Try to change USB HUB PORT.If not try to find drivers for mp3 player

Just bought the pen and I've got the same problem. I've tried 2 PCs, one with XP SP2 and the other Vista (using Vista driver from Wizcom). Both give me the same "cannot communicate with Pen" error message. I've double checked every recommendation I could find on Wizcom's website and the internet, but looks like either the cable or pen is faulty. Would be good to know if the new cable they're sending you fixes the problem.

My understanding, as a new user, is that IRiver plus 3 only communicates with the player via UMS mode, which is not the default. Windows Explorer and Windows Media Player only communicate through MTP mode. If you change from MTP (the default) to UMS, it will reformat the player and delete all your files.

In other words, do not use iriver plus 3 unless that is the only software that you want to use. Boing back to MTP mode after a sync or download will then delete all THOSE files you just downloaded.

I just say NO to Plus 3.

Good luck.