[ConfusedOwner]

Around a month or two ago my iDrive system started to completely shut down and restart every five or so minutes; sometimes sooner, sometimes longer. Occasionally the system won't restart but it will show 'no signal' on the screen, which lasts for around a second. I took the car to a local BMW specialist who said that the problem is quite common and that they would start by trying to update the software, as this might fix the issue. Prior to the workshop starting the update the workshop rung me to warn me that it might not even work and once applied it might break the iDrive completely and in which case I would need to replace the 'hard drive'.... Guess what happened next? Mid update the workshop rung me and told me that their systems were showing a 'critical' error and that they would need to replace the 'hard drive'. I swolled my pride (my last meal due to how expensive the replacement was) and told them to go ahead. The new 'hard drive' is in and it worked perfectly for all of one day. It's now back to the same old restarting every five minutes or so. I'm obviously going to speak with the workshop however, does anyone have suggestions on the next step? What could the issue be as I thought/hoped that a new 'hard drive' would solve the issue..