Check the CPU and GPU temperatures in BIOS/UEFI
Use built-in system monitoring tools
Use third-party hardware monitoring software
Check temperatures in the operating system task manager or performance tools
Feel for unusual heat near vents, keyboard, or case panels
Listen for fans running constantly or at high speed
Check whether the system is throttling or slowing down under load
Monitor temperatures during idle and heavy use
Compare readings against the manufacturer’s safe temperature range
Inspect airflow, dust buildup, and fan operation