It sounds like you have the frozen radio syndrome. About 50% of the time if I have the radio ON when I shut the car off, the radio freezes when I restart the car and try to change stations via the presets. If I cycle the radio power a few times it works again. The CD works fine. I have talked to Volvo Service several times and they reloaded software, replaced the ICM but still no joy.
2005 V50 T5
IPD Rear Sway Bar, Koni Sport (Yellow), StopTech Slotted Rotors.
2002 S40 1.9T - R.I.P.
1998 V70 NA - Sold
Remember kids, Speed doesn't kill ... impact does!