As jochen says, warn laser probably.

Use a good quality cd and burn at the slowest rated speed for the disc (if it 4 then use 4 if its 8 then use that).

Give that a go.

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Sept 03, M3, Silver Grey. Retro-fits: Modded Mk4 DVD Drive, OEM Bluetooth, VR Control, Rainbow Speaker Upgrade, Sony SOT Amp, HK Sub, CCFL, Intravee II, NightMode.