2004 Volvo S80 will not start.

Okay I was told that this happens when the key goes bad or the security CPU goes bad. I only have one key to the car. Is there a way to remove the computer and change out a standard type key. New key is $250 plus a towing bill no telling how much a CPU for the security system is.

Same problem rénové as broke but on thé ignition i havé amorcer onze for thé remote starter car but on remote hop toi remote anti Theft