Säker start är en säkerhetsfunktion som förhindrar att skadlig programvara läses in när en Windows-dator startas. Det fungerar genom att endast tillåta betrodd, digitalt signerad programvara att köras under startprocessen.

Safe mode starts Windows in a basic state, using a limited set of files and drivers. If a problem doesn't happen in safe mode, this means that default settings and basic device drivers aren't causing the issue.

Start your PC in safe mode. If you're having trouble restarting, you can start your PC in safe mode. See Start your PC in safe mode in Windows 10 for details. From safe mode, you can try the remaining troubleshooting steps. Check the Device Manager. Right-click the Start button and select Device Manager.

Secure Boot is a security feature that helps prevent malicious software from loading when a Windows PC starts up. It works by allowing only trusted, digitally signed software to run during the boot process.

Learn about the recovery options in Windows. Find out how to reset your PC, go back to a previous version of Windows, or use media to reinstall Windows.

Learn about Windows RE, how to access it, and the different tools it offers.

Den innehåller funktioner som Microsoft Defender Antivirus, Windows-brandväggen och smart appkontroll, som fungerar tillsammans för att ge realtidsskydd mot virus, skadlig kod och andra säkerhetshot. Appen är inbyggd i Windows och ser till att din enhet är skyddad från det ögonblick du startar den.

Lær hvordan du endrer oppstartsinnstillinger for Windows, inkludert aktivering av sikkermodus.

Find out how Windows Security can help keep your PC safe from malicious software and viruses.

Starting your device in Safe Mode can help troubleshoot sign-in problems. If you can sign in using Safe Mode, it means that basic device drivers and default settings weren’t causing the sign-in problem.