Hi,
The key to all of these issues is that both the computer, and the Reader to which you want to transfer copyright protected eBooks must both be authorised with the same Adobe Digital ID (this is usually an e-mail address and a password that you assign). One further point to note, any eBooks purchased are tied to the ID that was in use on the computer at the time of purchase. The implication of this is that if you change your computer, or have a problem with the hard disk etc (anything that might mean that you would have to re-authorise the same or a new computer), if you create a new Adobe ID then the eBooks purchased on the previous ID will not open - you have to re-authorise using the same logon (usually an e-mail) and password. This is still the case even if you have a Reader device matched to this new ID - although freshly purchased eBooks would be fine.
The easiest way to check which ID (e-mail) the computer is registered to is to open the Reader Library software and click 'Help' at the top and select 'About Reader Library'. This will tell you if the computer is authorised or not, and the e-mail it is linked to if it is authorised. (It's not a problem if the e-mail address is no longer being used - you just won't get any e-mails from Adobe:smileywink: - but it is important to use this e-mail as your logon if you have existing eBook content that you bought using this ID that you want to be able to view and transfer to your Reader in the future).
When you have an authorised computer, drag and drop one of your (purchased) copyright protected eBooks over to your Reader using the Reader Library software. If you see a prompt asking you to authorise the Reader, make sure you use the same Adobe ID and password as for the computer and that should be it!
If you don't get the prompt and the eBook transfers straight away - and you can read it on your Reader device, you are also good to go! If however, when you try to open the eBook on your Reader you get a message saying that it can't be opened due to copy protection or DRM or words to that effect, then you first need to de-authorise the Reader device, and then re-transfer the eBook again afterwards at which point you should seed the on-screen prompt to authorise the Reader device again. As before make sure that the ID and password match those used for the computer and that should then solve the problem.
N.B. if you need to de-authorise the Reader device, make sure it is connected to your computer via USB, open the Reader Library software and make sure you have clicked on 'Reader' in the menu down the left hand side of the screen (so that you are displaying any content stored on the Reader itself) - then press the following three keys together: Ctrl+Shift+D ...if you then click on the 'Status' in the left hand menu you should see confirmation that the Reader is de-authorised).
Sorry for the long explanation, but hope it all helps!:smileygrin:
