PC randomly reboot during gaming (temps are ok)

My PC randomly reboots while gaming.

Sometimes it happens in menu without launch a game, sometimes 5 min after start, sometimes 3-6 hours or none - no pattern there.

It happens in 3 of 4 games i playing currently:

• Euro Truck Simulator 2 (4-5 hours)
• American Truck Simulator (0-5 min)
• Natural Selection 2 (1-3 hours)

PC Rig:

• CPU AMD Ryzen 3 3100
• GPU NVIDIA GeForce GTX 1050 Ti 4GB Low Profile MSI
• PSU Corsair SF450 450W (changed from Chieftec CSN-650C 650W - not helped)
• MotherBoard MSI B550M PRO-VDH WiFi (came back from guarantee - not found any issue with that part, it’s 100% ok)
• RAM GoodRam IRDM X DDR 4 1x16GB 3200MHz CL16 (changed from HyperX - not helped)
• SSD AData SwordFish 1TB
• 4 fans 80x80

Max temps (during games):

• MotherBoard: 48C
• CPU: 59C
• GPU(hot spot): 78C
• SSD: 40C

There is a log from last reboot:

The system was rebooted without a clean shutdown first. Possible causes of the error: The system has stopped responding or has crashed, or there has been an unexpected loss of power.

Nazwa dziennika:System

Źródło: Microsoft-Windows-Kernel-Power

Data: 31.05.2021 15:22:00

Identyfikator zdarzenia:41

Kategoria zadania:(63)

Poziom: Krytyczne

Słowa kluczowe:(70368744177664),(2)

Użytkownik: SYSTEM

Komputer: DESKTOP-3SAEVNN

Opis:

System został uruchomiony ponownie bez uprzedniego czystego zamknięcia. Możliwe przyczyny błędu: system przestał odpowiadać lub uległ awarii albo nastąpiła nieoczekiwana utrata zasilania.

XML:

<Event xmlns="http://schemas.microsoft.com/win/2004/08...>

<System>

<Provider Name="Microsoft-Windows-Kernel-Power" Guid="{331c3b3a-2005-44c2-ac5e-77220c37d6b4}" />

<EventID>41</EventID>

<Version>8</Version>

<Level>1</Level>

<Task>63</Task>

<Opcode>0</Opcode>

<Keywords>0x8000400000000002</Keywords>

<TimeCreated SystemTime="2021-05-31T13:22:00.5246757Z" />

<EventRecordID>24024</EventRecordID>

<Correlation />

<Execution ProcessID="4" ThreadID="8" />

<Channel>System</Channel>

<Computer>DESKTOP-3SAEVNN</Computer>

<Security UserID="S-1-5-18" />

</System>

<EventData>

<Data Name="BugcheckCode">0</Data>

<Data Name="BugcheckParameter1">0x0</Data>

<Data Name="BugcheckParameter2">0x0</Data>

<Data Name="BugcheckParameter3">0x0</Data>

<Data Name="BugcheckParameter4">0x0</Data>

<Data Name="SleepInProgress">0</Data>

<Data Name="PowerButtonTimestamp">0</Data>

<Data Name="BootAppStatus">0</Data>

<Data Name="Checkpoint">0</Data>

<Data Name="ConnectedStandbyInProgress">false</Data>

<Data Name="SystemSleepTransitionsToOn">0</Data>

<Data Name="CsEntryScenarioInstanceId">0</Data>

<Data Name="BugcheckInfoFromEFI">false</Data>

<Data Name="CheckpointStatus">0</Data>

<Data Name="CsEntryScenarioInstanceIdV2">0</Data>

<Data Name="LongPowerButtonPressDetected">false</Data>

</EventData>

</Event>

I have no idea how to fix it now. Please help