Startup hang solution This MacFixIt Forums thread (Solution for hanging loginwindow) describes a hang at startup (the login window never appears) that was also ultimately fixed by deleting preferences ...

Learn how to reset MacBook Air PRAM, NVRAM & SMC to fix Mac startup issues. Step-by-step Mac hardware reset guide for Intel & Apple Silicon models. Pixabay, StockSnap Resetting PRAM, NVRAM, and SMC on ...