When key turned to acc car has no power

Hello, Dave here, contributing to RepairPal and providing expert advice since 2010. The ignition key cylinder could be compromised, but the symptom alone is not good enough to be sure of anything. When started, does the vehicle do anything? Engine crank? Do you drive normally? For best and easiest results, I'd suggest visiting a shop near you for help seeing and testing for the cause of concern. https://repairpal.com/auto-repair-near-me Click the link or call us at 877-913-1554. We'll gladly find you a certified RepairPal shop in your area.