help with annoying i dive/sat nav/cd issues

[andy5468]

Hi there
I am trying to get some help/advice with the list of annoying faults i currently have with my idrive on my 2005 535d sport.
The issues i am experiencing are -

I DRIVE VERY SLOW TO START UP, REMAINS ON BMW LOGO SCREEN FOR SOMETIMES UPTO 5 MINUTES BEFORE GOING BLACK AND REBOOTING ITSELF (SOMETIMES STARTS UP OK WITHIN 30 SECONDS)

I DRIVE TURNS OFF & SCREEN GOES BLACK BEFORE REBOOTING WHILST DRIVING

I DRIVE SCREENS FREEZE AND DONT REACT TO ANY I DRIVE CONTROLS THEN SUDDENLY MOVES THROUGH SEVERAL SCREENS RAPIDLY DUE TO MY REPEATED PRESSING OF MENU / CONTROLLER BUTTONS.

NAV SYSTEM WORKS INTERMITTENTLY AND VERY OFTEN STATES PLEASE INSERT DISC OR DISC READ ERROR (MORE COMMONLY THE FIRST MESSAGE) ALTHOUGH DISC IS ALREADY IN (TRIED SEVERAL DISCS SO DISC ELIMINATED)

OCCASIONALLY MUSIC CD CONTINUES TO PLAY WHEN KEYS REMOVED FROM CAR (WHILST CD IN SINGLE DISC DRIVE)

ONLY WHEN USING 6 DISC CHANGER CD TRACKS OFTEN STOP FOR A COUPLE OF SECONDS BEFORE CONTINUING THROUGH THE TRACK OR STOP AT A POINT IN A TRACK AND I HAVE TO MANUALLY SELECT THE NEXT TRACK TO CONTINUE PLAY OF CD . (COPIED CDR DISCS ARE BEING USED BUT WORK FINE IN SINGLE DISC PLAYER)

Any help appreciated.