Outlook data on a laptop lives in local data files: .ost for synced accounts and .pst for local archives, with system-specific default folders.

On the restart shutdown problem, common causes include Fast Startup, power faults, drivers, and heat; turn off Fast Startup and check power and cooling.

If a sleeping laptop won’t wake, force-wake, power-cycle, then fix drivers, power settings, and firmware to stop repeat failures.

On Windows 10, an external display often turns off because lid-close is set to Sleep or the graphics link suspends; set lid action to Do nothing.

For a blank laptop display, start with power reset and display toggles, then use safe mode or recovery to repair drivers or startup.

Closing the laptop usually triggers sleep or display off; adjust lid settings, power plans, and drivers to stop the black screen.

A black laptop display often stems from power, display, or driver faults—start with a hard reset, external-screen test, then safe mode and driver fixes.

A black screen after sign-in usually comes from display path issues, driver faults, or Explorer not starting—use the steps below to bring back the desktop.

A restart black screen on a laptop often stems from a stuck graphics driver or Fast Startup; use the steps below to bring the display back.

When a laptop won’t wake from sleep, check power settings, device wake permissions, and update drivers or firmware to restore normal wake behavior.