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:
- 打開 Start menü,輸入 任務 調度,然後按 Enter.
- Review your computer’s list of scheduled tasks under 任務 調度 (Thư viện).
- Right-click any tasks that force your PC to shut down or restart and select 禁用.
2.禁用快速啟動
快速啟動 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.
要禁用快速啟動:
- 打開 Windows控制面板 並選擇 硬件和聲音 > 電源選項 > Choose what the 電源按鈕 do.
- 選擇 更改設置 當前不可用.
- 取消選中旁邊的框 打開快速啟動(推薦).
- 選擇 保存更改.
- 打開 Start menü 並選擇 強大能力 > 關閉.
- 重新啟動您的計算機。
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.
- 打開 Start menü 並選擇 設定.
- 選擇 Windows更新.
- 選擇 檢查更新. If there’s a new update, select 下載並安裝.
4. Update Your Computer’s Drivers
過時的 hardware device drivers are a common problem behind a computer that shuts down or restarts randomly. Use a driver updater utility 点讚 驅動程序助推器 to update your computer’s drivers.
Additionally, use Windows Update to install Microsoft-verified hardware drivers and updates. To do that:
- 打開 Start menü 並選擇 設定.
- 選擇 Windows更新e.
- 造訪 高級選項 > 可選更新 and install all pending driver updates.
5.回滾驅動程序
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:
- 用鼠標右鍵單擊 Start menü 並選擇 “設備管理器”.
- Expand the driver category—顯示適配器.
- Right-click the graphics card driver and select 氟化鈉性能.
- 切換到 司機 標籤。
- 選擇 回滾驅動程序.
6. Run the SFC and DISM Tools
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 以管理員身份開啟—and run the following commands one after the other:
SFC / SCANNOW
DISM。exe文件 /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。 運行CHKDSK
接下來,運行 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., 內存管理, 內核安全檢查失敗, Driver_Overran_Stack_Buffer, etc. Then, refer to our complete BSOD troubleshooting guide to learn what you must do next.
9. 檢查惡意軟件
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 後 a severe infection, so your best option is to rely on a third-party virus removal utility.
For example, the free versions of BitDefender病毒防護 和 的Malwarebytes are extremely effective at detecting malware. Download either one, run a quick scan, and then follow up with a full scan.
10. 提供充足的通風
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.執行系統還原
If the shutdowns and restarts persist, roll back Windows to a time when it did not shut down or restart automatically. Assuming that “系統還原” is active on your computer, you must:
- 媒體推薦 Windows + R to open Run. Then, type Rstrui 到 已提交 字段並選擇 OK.
- Pick a restore point and select 掃描受影響的程序 to identify the changes to expect if you decide to go ahead.
- 選擇 下一頁 and follow the onscreen instructions to revert your computer to the restore point.
12. 運行內存測試
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.
- 類別 Windows內存診斷 into the Start menu and select 已提交.
- 選擇 立即重啟並檢查問題(推薦).
- 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 需要更新 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. 備份您的電腦, 接著:
- 打開設置應用程序並選擇 系統 > 恢復.
- 選擇 復位PC.
- 選擇 保存我的文件 (if you want to keep personal files intact) or 刪除一切.
If that fails, you must remove and reinstall Windows from scratch.
15。 獲得專業幫助
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.