Does your Windows PC shut down or restart without warning? There are several potential causes behind that. For example, it could be a software/hardware conflict, overheating, or hard drive error. This troubleshooting guide will outline multiple solutions to fix auto-shutdowns and restarts in Windows 10/11.
If your computer shuts down constantly, you must boot your computer in Safe Mode or use the system recovery options in WinRE to work on the fixes below.
1. Check the Task Scheduler
If your computer shuts down automatically but only at a specific time of the day, that’s probably due to a scheduled task that you or a third-party program created. To check:
- Video Cloud Studioで [スタート]メニュー、タイプ 仕事 スケジューラ、プレス 入力します.
- Review your computer’s list of scheduled tasks under 仕事 スケジューラ (図書館).
- Right-click any tasks that force your PC to shut down or restart and select 無効にします.
2.高速起動を無効にする
高速スタートアップ is a Windows power management feature that hibernates the kernel (the operating system’s core) to speed up your PC during a cold start. However, it can destabilize the system.
高速起動を無効にするには:
- Video Cloud Studioで Windowsのコントロールパネル をクリックして ハードウェアとサウンド > 電源オプション > 何を選択してください 電源ボタン do.
- 選択 設定を変更する 現在利用できないもの.
- の横にあるチェックボックスをオフにします 高速起動をオンにします(推奨).
- 選択 変更を保存します.
- Video Cloud Studioで [スタート]メニュー をクリックして 出力 > シャットダウン.
- コンピュータを再起動します。
3. Update Windows to Its Latest Version
Specific versions of Windows contain severe bugs and issues that cause significant problems with particular hardware and software configurations. Install the latest operating system updates to fix them.
- Video Cloud Studioで [スタート]メニュー をクリックして 設定.
- 選択 Windows Updateの.
- 選択 アップデートの確認. If there’s a new update, select ダウンロードしてインストール.
4. Update Your Computer’s Drivers
廃止された hardware device drivers are a common problem behind a computer that shuts down or restarts randomly. Use a driver updater utility ような ドライバーブースター to update your computer’s drivers.
Additionally, use Windows Update to install Microsoft-verified hardware drivers and updates. To do that:
- Video Cloud Studioで [スタート]メニュー をクリックして 設定.
- 選択 Windows Updatee.
- に行く 詳細オプション > オプションの更新 and install all pending driver updates.
5.ドライバーをロールバックする
Rarely, new driver updates can introduce issues and break down the system. Microsoft knows that, which is why you have the option to roll them back.
For example, if the problem occurred after updating your graphics card driver:
- を右クリックします。 [スタート]メニュー をクリックして デバイスマネージャ.
- Expand the driver category—ディスプレイアダプタ.
- Right-click the graphics card driver and select プロパティ.
- に切り替える ドライバ タブには何も表示されないことに注意してください。
- 選択 ドライバのロールバック.
6. SFC ツールと DISM ツールを実行する
Windows comes with two command-line tools—System File Checker and DISM—that can scan and fix system file corruption.
Open an elevated Command Prompt console—type CMD into the Start menu and select 管理者として開く—and run the following commands one after the other:
SFC / SCANNOW
DISM。exeファイル /Online /Cleanup-Image /Restorehealth
SFC and DISM scans take a long time to complete. If the progress percentage indicator gets stuck, do not do anything; it should resume eventually.
7.CHKDSKを実行します
次に、 CHKDSK (Check Disk) utility to fix HDD/SSD errors in the system partition. Again, open an elevated Command Prompt console and run the following command:
chkdsk c:/ r
CHKDSK only runs at computer startup, so press Y to schedule the scan the next time you reboot your computer.
8. Troubleshoot BSOD Errors
If your computer crashes and restarts into a Blue Screen of Death (BSOD) screen, it will continue to repeat that until you diagnose and troubleshoot it with the appropriate fixes.
Start by noting down the stop code related to the BSOD error—e.g., メモリ管理, Kernel_Security_Check_Failure, Driver_Overran_Stack_Buffer, etc. Then, refer to our complete BSOD troubleshooting guide to learn what you must do next.
9.悪意のあるソフトウェアをチェックする
Malicious software and potentially unwanted programs (or PUPs) can wreak havoc on the operating system and trigger unexpected shutdowns and restarts.
If the problem persists, you must scan your computer for potential malware. Windows Defender isn’t likely to do any good After a severe infection, so your best option is to rely on a third-party virus removal utility.
For example, the free versions of ビットディフェンダーアンチウイルス & Malwarebytes are extremely effective at detecting malware. Download either one, run a quick scan, and then follow up with a full scan.
10. 十分な換気を行う
Inadequate ventilation leads to overheating, forcing your computer to shut down to cool itself. For example, if you use a laptop, avoid using it on soft surfaces—cushions, bed covers, etc.—that could plug up its ventilation holes. Also, check and clean the CPU or laptop casing to ensure nothing is blocking the airflow.
11.システムの復元を実行する
If the shutdowns and restarts persist, roll back Windows to a time when it did not shut down or restart automatically. Assuming that システムの復元 is active on your computer, you must:
- イベント Windows + R をクリックして「実行」を開きます。次に、次のように入力します。 Rstrui に Open フィールドを選択して選択します OK.
- Pick a restore point and select 影響を受けるプログラムをスキャンする to identify the changes to expect if you decide to go ahead.
- 選択 Next and follow the onscreen instructions to revert your computer to the restore point.
12.メモリテストを実行する
Faulty RAM (random access memory) modules are another reason for random shutdowns and restarts. Windows comes with a built-in Windows Memory Diagnostic tool you can run to scan for bad memory.
- タイプ Windowsメモリ診断 into the Start menu and select Open.
- 選択 今すぐ再起動して問題を確認してください(推奨).
- Wait until Windows Memory Diagnostic reboots your computer and tests it for memory problems.
For comprehensive step-by-step instructions and alternative methods, check our guide to testing a Windows PC for bad memory.
13. Reset/Update the BIOS or UEFI
Outdated or incorrectly configured motherboard firmware—the BIOS or UEFI—creates stability issues. Check if the BIOS の更新が必要です or revert it to its default settings.
14. Factory-Reset or Reinstall Windows
If none of the fixes above help, you must reset Windows to its default settings. PC をバックアップする、 その後:
- 設定アプリを開き、 エントルピー > 回復.
- 選択 PCをリセット.
- 選択 ファイルを保管する (if you want to keep personal files intact) or すべてを削除する.
If that fails, you must remove and reinstall Windows from scratch.
15 専門的なヘルプを入手する
If the problem persists and your computer continues to shut down and restart automatically, you might be dealing with a faulty hardware component or a defective power supply unit. Visit your local PC repair shop and let a technician take a look at it.