My Dell gives me the following message after booting. "Dell A10 Printer 960 Button Monitor encountered a problem and needs to close" If I tell it OK then I can move on but that message will reappear the next time I boot. If I don't say OK it will not let me do anything. Any ideas what the problem is or how to get rid of the message for good?

OK have you tried uninstalling the whole printer driver and reinstalling it ?
Least that way it should do fix the problem and stop the error message appearing.

I will give that a try right after I confirm I have the driver to reinstall.

If you don't have the driver, head over to Dell's site and grab it.
Least this way you will be guaranteed of having the most up to date one.

Here you go I found it for you: HERE (http://ftp.us.dell.com/printer/R69636.EXE)

We had a dell and the printer did the same thing and I never got it to work. Good luck

Id try and unistall it and then reinstall.