You needed your computer an hour ago, but instead you’re staring at a screen that says 35 percent complete, and it’s been saying 35 percent complete for the past 45 minutes.
When you bought your laptop, the battery probably lasted most of the day. Now you’re hunting for a power outlet by mid-morning and carrying a charger everywhere you go.
Hard drives don't usually fail without warning. They fail without the owner noticing the warning.
You know the routine: you plug in your laptop charger, and nothing happens. Wiggle it left; still nothing. Tilt it up slightly, apply a little pressure, and the charging light finally flickers on.