I am guessing your DSP amp up-and-died. Or, possibly a connector came loose. Check the fuses and connections on the radio module and your DSP amp. Also, there is a fuse on the back side of the radio itself. If the power light was on, I am guessing that the main radio fuses are good. Also, it is possible that your car battery is going bad, or you have a bad ignition switch. DSP (and other electronics) flakyness is typicall of power issues from battery or ignition switch.

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2000 E38 750iL Highline Edition, Upgraded with the lastest 2006 X5 Electronics
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