Check CPU temperature with a hardware monitor app
Check GPU temperature with a hardware monitor app
Check motherboard or system temperature in BIOS or UEFI
Look for fan speeds running unusually high
Feel for excessive heat coming from the case exhaust
Watch for sudden performance drops or throttling
Check for unexpected shutdowns or restarts
Listen for loud or constantly spinning fans
Inspect whether the case feels hotter than normal to the touch
Compare temperatures to the normal range for your hardware
Check temperatures while gaming or running heavy tasks
Check temperatures at idle and under load
Look for warning alerts from monitoring software
Monitor temperatures over time to spot spikes