Computer Randomly Restarting No Warning Windows 11 Fix [2026]

Quick Answer: Random restarts are caused by overheating, power supply issues, or Windows automatic restart on system failure. Check CPU temps and disable "Automatically restart" in System Properties > Advanced > Startup and Recovery.

Symptoms

PC restarts randomly
No blue screen or warning
Happens during gaming or idle
Started after hardware change

Root Cause

Overheating, PSU failure, faulty RAM, or Windows crash auto-restart.

Fix

Method 1: Disable Auto Restart

System Properties → Advanced → Startup and Recovery
Uncheck "Automatically restart"

Method 2: Check Temperatures

Get-WmiObject MSAcpi_ThermalZoneTemperature | Select-Object CurrentTemperature

Method 3: Check Event Viewer

Get-WinEvent -FilterHashtable @{LogName='System'; ID='41,1074,1076'} | Select-Object TimeCreated, Message

Method 4: Test PSU and RAM

Swap PSU if possible. Test RAM with Windows Memory Diagnostic.

How Againly Helps

Againly runs check_memory_health and thermal checks to detect restart causes.

[CTA: Try free diagnosis]

Related: BSOD Memory Fix

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