I have the original cable and tiptoi manager is installed and up to date. I switched on the pen and as soon as I plugged it in it went into charge mode but it wasn't recognised. After about a minute I get a notification from Windows telling me that something has gone wrong... Any idea how to get it back up and running? I've already tried with 2 different PCs with the same result. It's very frustrating to have books but not be able to load anything onto the pen.