Windows won’t start

PC stuck on the 'Restarting' screen for a very long time

After choosing Restart, or during an automatic restart for updates or troubleshooting, the screen shows 'Restarting' with a spinning indicator and stays there far longer than it should, sometimes for hours.

Difficulty
Intermediate
Time
30–120 minutes
DIY cost
$0
Pro cost
$80–$180

Symptoms

  • Screen specifically says Restarting rather than a different loading message
  • No progress or change for well over 30–45 minutes
  • Fans and drive activity may have stopped entirely
  • PC becomes unresponsive to any input during this state

Likely causes

  • CommonUpdate or system process still genuinely completing in the backgroundSome restarts involve applying changes that take longer than the visible message suggests, especially with pending updates.
  • CommonSystem actually hung rather than truly restartingThe 'Restarting' message itself can freeze rather than reflecting real ongoing work.
  • PossibleFailing drive making the restart process unusually slowA struggling drive can turn a normally quick restart into an apparent hang.
  • PossibleFaulty driver or service preventing a clean shutdown before restartSome background processes don't close properly, delaying or blocking the restart.
  • Less commonCorrupted system files interfering with the restart sequenceDeeper file damage can cause hangs at unusual points in the shutdown/restart cycle.

What to do

  1. Check for any drive activity light or sound; if there's genuine ongoing activity, give it up to an hour before intervening.
  2. If there's been no visible activity for 45–60 minutes and the screen hasn't changed at all, hold the power button 10 seconds to force a restart.
  3. Power back on and see if it boots normally this time; a failed restart often self-resolves or triggers automatic repair on the next attempt.
  4. If it hangs again at the same point, boot into Windows Recovery Environment and run Startup Repair.
  5. From Recovery Environment, check Event Viewer logs if accessible, or run 'chkdsk C: /f' to rule out disk issues slowing the process.
  6. If this coincides with a specific update, note it and check for known issues once you're able to reach the desktop and search online.
  7. If restarts consistently hang at the same stage even after Startup Repair, treat it similarly to other boot-loop issues and consider Reset this PC as a next step.

Tools and parts

  • Bootable Windows recovery USB drive

When to call a pro

If the PC repeatedly hangs on Restarting even after Startup Repair, a technician can determine whether it's a drive performance issue or a deeper corruption problem.

Safety

Generally low risk

Generally low risk for a careful person. Stop if anything looks different from what this guide describes.

Related guides

Operator provides AI-generated troubleshooting information. It can be wrong. For safety-critical, electrical, gas, structural, medical, automotive safety, or other high-risk problems, consult a qualified professional.