I recently had to replace the battery in my '02 X5. I know from reading that this is a common complaint, but everything worked fine prior to the battery dying, now I've got radio, a blank screen and no nav system. I was trying to reload the O/S yesterday, and after burning the image in mode2 using imgburn I opened the trunk and noticed that the eject button on the system lights up, but there is no light on the power led. I went ahead with the procedure, waited until the eject light turned off, unhooded the cables, waited 15 minutes, rehooked the cables and inserted the disk, turned the key to position 1 and I could hear the system accessing the disk (or at least trying to) in burst for about ten minutes but nothing came up on the screen.

I think the system must be dead, but why would the system access the disk if I don't get any power light on the system LED? After my failed attempt the system returned the disk with no problems.