PC restarts while gaming
The PC boots again on its own during a game. A Windows crash, instability or interrupted power can end in a restart; the symptom does not identify one component. If it stays off, use the gaming shutdown guide.
Try this first
1 quick checks · ~2 min
Find your situation
See all the clues. Choose the one that matches what you observe.
There was a stop screen or recorded bugcheck
Keep the code and logs to prioritize the Windows/driver failure.
It happens with one game or after a driver change
Compare history and official release notes without ruling out hardware because only one game fails.
There is a thermal warning, poor airflow or a preceding slowdown
Use existing temperature records and model limits; do not force another load.
Instant restart without a useful code
Review hardware and power changes without assuming the PSU is at fault.
OC, undervolt, XMP or EXPO is enabled
Compare with supported stock settings without experimenting with voltages.
There are memory errors or recurring WHEA entries
Keep the details and choose targeted diagnostics; the event name does not select a part.
Diagnostic signals
- ObservationOnly Kernel-Power 41 appears
- A power loss or hang can prevent saving the code. Zero values and a missing dump do not prove the power supply is the cause.
- ObservationWindows recorded WHEA
- It describes a hardware-reported error. Keep component, type and time; do not turn an APIC ID or Cache Hierarchy Error into an instruction to replace the CPU.
- ObservationAnother GPU or lower load changed the result
- Driver, power draw and thermal behavior also change. The difference narrows the group but does not by itself separate GPU from power delivery.
Step-by-step solutions
Classify the failure already observed
Separate restart, shutdown and game closure using what already happened.
Record whether the startup logo and Windows return, it stays off, a stop code appeared or only the game closed. If it stays off, follow the related gaming-shutdown guide; if it cannot stay powered on, follow the immediate power-on/off guide.
If only the game closes and Windows remains active, investigate that application. If it really restarts, record time, game and recent change. Save important data while stable; do not repeat the failure to get a photo.
Interpret logs before playing again
Once Windows is stable, open Event Viewer > Windows Logs > System and review around the recorded time. Keep BugCheck, WHEA-Logger and Kernel-Power 41 details without assuming the last visible event caused it. Event 41 is commonly recorded during startup after the failure.
If BugcheckCode is nonzero, Windows recorded a stop: keep the code and existing dump file for support. In Event 41 the number can be decimal; do not confuse it with the hexadecimal stop code. Do not publish complete dumps without privacy review.
If WHEA appears, keep component/error type and whether the same description recurs, then follow memory/stability. Without WHEA or bugcheck, hardware and drivers are not ruled out: a fast shutdown can prevent writing them. Follow changes, temperature or power according to the other findings.
Compare one game and the recent change
Use the usage history: did other demanding games already run without restarting, or also fail? One game prioritizes its version, mods/overlays and driver; it does not prove healthy hardware because workloads differ. Do not install benchmarks to complete the comparison.
If it began after a game or graphics-driver update, compare version and symptom with official release notes. Apply only the relevant correction or a supported compatible previous version; do not reinstall Windows or start with cleanup tools. If a new overlay/mod was used, disable only that nonessential component before also changing the driver.
After a concrete correction, observe normal use only if the PC is stable without electrical/thermal danger signs. If it restarts again, stop the game and keep the result; do not run a test series until it fails again. If several workloads or idle also fail, prioritize general stability.
Evaluate temperature without provoking another shutdown
Review existing temperature warnings and records from the PC/GPU’s official tool. Compare CPU, GPU and hotspot sensors only with their model limits: they are different measurements and this guide has no universal threshold. Intel publishes processor-specific limits; do not apply that value to every GPU or CPU.
A thermal warning, frequency drop near a temperature limit or blocked airflow prioritizes cooling. With the PC off and unplugged, externally check that vents are unobstructed and it has ventilation space. Do not insert objects or open the PSU; internal cleaning or fan work requires the manufacturer/technician procedure.
A normal reading after restarting does not describe the failure moment. If prior records show no excess, temperature becomes less likely but is not ruled out; follow other findings. For abnormal heat or a required fan not working, stop and seek inspection before another load.
Narrow power delivery without diagnosing the PSU by elimination
Record CPU, GPU, RAM and PSU model from documentation, plus any recent GPU/upgrade. Compare the PC/GPU manufacturer’s published power and connector requirements with the installed configuration. Printed wattage does not prove PSU health or compatibility of every combination.
An immediate restart under load with few logs makes power supply and assembly worth reviewing, especially after hardware expansion. But drivers, memory or motherboard can also contribute. FPS limiting or a lower-power GPU avoiding the failure does not separate these causes.
If shutdowns recur, ask a technician for controlled substitution with a known compatible PSU using that PSU’s correct cables, and connection/cooling inspection. Do not buy a PSU solely because of Event 41, open its enclosure, bridge pins or take electrical measurements. Without a new hypothesis, stop retries.
Advanced checks
Continue if the earlier steps did not help. Read each procedure’s precautions first.
Revert only your own tuning to supported settings
If you enabled OC, undervolt, PBO or XMP/EXPO memory profiles, record what changed and restore those settings to manufacturer-supported values through the corresponding tool/manual. XMP/EXPO are memory-overclocking profiles; do not treat them as untuned just because they use one button.
If you do not know the stock setting, seek help: do not load every BIOS default or change boot, encryption or disk mode. If normal use stops failing with supported configuration, stability of the tuning/combination becomes more likely; it does not prove a defective RAM module. Do not re-enable the profile to cause another shutdown.
If already untuned or unchanged, preserve the result and move to log-directed diagnosis. Do not compensate by increasing voltage or flash firmware on a PC that restarts unpredictably.
Choose a memory test only with a concrete finding
If RAM was added, prior memory errors exist or recurring logs fit instability, first verify supported configuration and slots/count against the manual without moving powered modules. WHEA describes the reported error: its component or APIC ID is insufficient to choose a replacement part.
With a stable PC and no power/heat danger signs, agree with support on the manufacturer’s memory diagnostic or official MemTest86 following its manual. Creating a boot USB can erase that USB: use an empty/backed-up one. If unfamiliar with the procedure or the PC restarts outside the game too, leave the test to a technician.
If errors appear, preserve configuration and result, and stop demanding use. The tested path includes memory, CPU and motherboard; it cannot automatically blame one module. If none appears, that test does not rule out intermittent faults or power delivery. A physical module/slot or PSU comparison needs a safe procedure rather than stress loops.
Still not working?
Provide exact behavior, time, bugcheck/WHEA, recent changes, active settings and workloads that already worked. Add existing thermal records and comparisons made without forcing shutdowns. Stop for danger or when no new hypothesis remains: the next review should separate components with a technician’s tools/procedures rather than repeat restarts or reinstall as a test.
Sources
Documentation behind this guide. Editorial recommendations are identified separately.
- Microsoft LearnOfficialAdvanced troubleshooting for Event ID 41: The system has rebooted without cleanly shutting down first
- AMDOfficialTroubleshooting Tips for Resolving System Stability Issues
- AMDOfficialHow to Troubleshoot Power Supply Issues
- Microsoft LearnOfficialWHEA Hardware Error Events
- Intel SupportOfficialInformation about Temperature for Intel Processors
- IntelOfficialIntel Extreme Memory Profile
- AMDOfficialAMD EXPO Technology
- PassMark MemTest86OfficialTroubleshooting Memory Errors
Source review: . A documentation review, not a physical hardware test.
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