Checking your CPU's temperature is a breeze and doesn't involve taking off the case to inspect components physically. Most of the latest CPU models have heat sensors embedded digitally, which constantly measure the levels of heat. You only need to run some software to interpret the heat data. The simplest way is to download Core Temp or similar programs like HWMonitor and HWiNFO. These programs will show you at each instant how hot each of the CPUs' cores is. Alternatively, you may also be able to figure out temperature from the BIOS/UEFI interface, though the interface only shows idle temperature readings. Monitoring this on an ongoing basis allows you to identify possible overheating early and so avoid damage to the system, which can occur from the build-up of excess heat. These are the ways you can check CPU temperature.