Hi,
I would pull the video toaster, then I would leave the A4000 on for at least a half hour, then try rebooting. If the A4000 has been sitting for a while without being turned on, somethimes it has a hard time starting (at least mine does) after I leave it turned on for a while turn it off then turn it on, it starts right up. What mine usually does it shows me a purple stripe going vertically down the screen then goes black. After I leave it on for half an hour (or more) then turn it off, then back on it seems to take the purple stripe and then waves it, then turn I hear the familiar click of the hard drive looking for files.
This could only be my A4000, I really don't know.
smerf
