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 käynnistä tietokone vikasietotilassa 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:
- Avaa Käynnistä-valikon, tyyppi Tehtävä Scheduler, ja paina enter.
- Review your computer’s list of scheduled tasks under Tehtävä Scheduler (Thư viện).
- Right-click any tasks that force your PC to shut down or restart and select Poista.
2. Poista Fast Startup käytöstä
Nopea käynnistys 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.
Nopean käynnistyksen poistaminen käytöstä:
- Avaa Windowsin Ohjauspaneeli ja valitse Laitteisto ja äänet > Virta-asetukset > Choose what the virtapainikkeet do.
- valita Vaihda asetuksia jotka eivät ole tällä hetkellä käytettävissä.
- Poista valinta vieressä olevasta ruudusta Kytke nopeaa käynnistystä (suositus).
- valita Tallenna muutokset.
- Avaa Käynnistä-valikon ja valitse teho > sulkea.
- Käynnistä tietokone uudelleen.
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.
- Avaa Käynnistä-valikon ja valitse Asetukset.
- valita Windows Update.
- valita Tarkista päivitykset. If there’s a new update, select Lataa ja asenna.
4. Update Your Computer’s Drivers
vanhentunut hardware device drivers are a common problem behind a computer that shuts down or restarts randomly. Use a ohjaimen päivitysapuohjelma pitää Driver Booster to update your computer’s drivers.
Additionally, use Windows Update to install Microsoft-verified hardware drivers and updates. To do that:
- Avaa Käynnistä-valikon ja valitse Asetukset.
- valita Windows-päivityse.
- Mene Lisäasetukset > Valinnaiset päivitykset and install all pending driver updates.
5. Palauta ajurit
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:
- Napsauta hiiren oikealla painikkeella Käynnistä-valikon ja valitse Laitehallinta.
- Expand the driver category—Näyttösovittimet.
- Right-click the graphics card driver and select Kiinteistöt.
- Vaihda kuljettaja Tab.
- valita Aikaisempi ohjain.
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 Avaa järjestelmänvalvojana—and run the following commands one after the other:
sfc / scannow
DISM.exe /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. Suorita CHKDSK
Seuraavaksi, suorita 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., MEMORY_MANAGEMENT, 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. Tarkista haittaohjelmat
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 jälkeen a severe infection, so your best option is to rely on a third-party virus removal utility.
For example, the free versions of Bitdefender Antivirus ja Malwarebytes are extremely effective at detecting malware. Download either one, run a quick scan, and then follow up with a full scan.
10. Järjestä riittävä ilmanvaihto
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. Suorita järjestelmän palautus
If the shutdowns and restarts persist, roll back Windows to a time when it did not shut down or restart automatically. Assuming that järjestelmän palauttaminen is active on your computer, you must:
- lehdistö Windows + R avataksesi Run. Kirjoita sitten Rstrui osaksi avoin -kenttään ja valitse OK.
- Pick a restore point and select Hakeutuneiden ohjelmien tarkistaminen to identify the changes to expect if you decide to go ahead.
- valita seuraava and follow the onscreen instructions to revert your computer to the restore point.
12. Suorita muistitesti
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.
- Tyyppi Windows Memory Diagnostic into the Start menu and select avoin.
- valita Käynnistä nyt uudelleen ja tarkista ongelmat (suositeltu).
- 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 tarvitsee päivityksen 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. Varmuuskopioi tietokoneesi, ja sitten:
- Avaa Asetukset-sovellus ja valitse järjestelmä > Elpyminen.
- valita reset PC.
- valita Pidä tiedostoni (if you want to keep personal files intact) or Poista kaikki.
If that fails, you must remove and reinstall Windows from scratch.
15. Hanki ammattitaitoista apua
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.