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:
- 打开 “开始”菜单,类型 任务 调度,然后按 输入.
- Review your computer’s list of scheduled tasks under 任务 调度 (图书馆).
- Right-click any tasks that force your PC to shut down or restart and select 关闭.
2.禁用快速启动
快速启动 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.
要禁用快速启动:
- 打开 Windows控制面板 并选择 硬件和声音 > 电源选项 > 选择什么 电源按钮 do.
- 选择 更改设置 当前不可用.
- 取消选中旁边的框 打开快速启动(推荐).
- 选择 保存更改.
- 打开 “开始”菜单 并选择 功率 > 关闭.
- 重启电脑
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.
- 打开 “开始”菜单 并选择 个人设置.
- 选择 Windows更新.
- 选择 检查更新. If there’s a new update, select 下载并安装.
4. Update Your Computer’s Drivers
过时的 hardware device drivers are a common problem behind a computer that shuts down or restarts randomly. Use a driver updater utility 喜欢 驱动程序助推器 to update your computer’s drivers.
Additionally, use Windows Update to install Microsoft-verified hardware drivers and updates. To do that:
- 打开 “开始”菜单 并选择 个人设置.
- 选择 Windows更新e.
- 在MyCAD中点击 软件更新 高级选项 > 可选更新 and install all pending driver updates.
5.回滚驱动程序
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:
- 用鼠标右键单击 “开始”菜单 并选择 装置经理.
- Expand the driver category—显示适配器.
- Right-click the graphics card driver and select 查看房源.
- 切换到 驱动器 标签。
- 选择 回滚驱动程序.
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 以管理员身份打开—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.运行CHKDSK
接下来,运行 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., 内存管理, 内核安全检查失败, Driver_Overran_Stack_Buffer, etc. Then, refer to our complete BSOD troubleshooting guide to learn what you must do next.
9. 检查恶意软件
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 after a severe infection, so your best option is to rely on a third-party virus removal utility.
For example, the free versions of BitDefender病毒防护 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. 提供充足的通风
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. 执行系统还原
If the shutdowns and restarts persist, roll back Windows to a time when it did not shut down or restart automatically. Assuming that “系统还原” is active on your computer, you must:
- 媒体 Windows + R to open Run. Then, type Rstrui 到 可选 字段并选择 OK.
- Pick a restore point and select 扫描受影响的程序 to identify the changes to expect if you decide to go ahead.
- 选择 下一页 and follow the onscreen instructions to revert your computer to the restore point.
12. 运行内存测试
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.
- Type Windows内存诊断 into the Start menu and select 可选.
- 选择 立即重启并检查问题(推荐).
- 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 needs an update 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. 备份您的电脑, 接着:
- 打开设置应用程序并选择 系统 > 修复工具.
- 选择 复位PC.
- 选择 保存我的文件 (if you want to keep personal files intact) or 删除一切.
If that fails, you must remove and reinstall Windows from scratch.
15。 获得专业帮助
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.