Use BIOS/UEFI hardware monitor
Use Task Manager or System Monitor for basic system info
Install CPU temperature software such as HWMonitor, Core Temp, HWiNFO, or Open Hardware Monitor
Check manufacturer utilities from Intel, AMD, Dell, HP, Lenovo, or ASUS
Use your operating system’s terminal or command line with supported sensor tools
Check motherboard fan/control software
Read temperatures in the CPU section, package temperature, or core temperatures
Compare readings at idle and under load
Keep the CPU within the safe temperature range for your processor model