My car stalled and now nothing works.
If jump starting the car works, I would suspect the alternator is no longer charging and probably needs replacement. A mechanic should fully charge your battery before testing it and if the battery passes, get the alternator tested. I wouldn't be surprised if the alternator had fried and the battery was powering the entire vehicle by itself, and eventually it went low enough on charge where there wasn't enough juice to power the computer. Have a certified mechanic diagnose the battery issue properly and ensure the right repairs are made.
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