If your HP Elitebook 8440 has overheating issues, chances are these vents are fouled with dust. Vacuuming these vents is the first step in fixing an overheating Elitebook. The vent at the top of the photo is just to the left of the power button. The first thing you need to do is just vacuum the vents. For HP products a product number. Examples: LG534UA; For Samsung Print products, enter the M/C or Model Code found on the product label. Examples: “SL-M2020W/XAA” Include keywords along with product name. Examples: 'LaserJet M477 paper jam', 'EliteBook 840 G2 bios update' Need help finding your product name or product number?Technical Blog
Hp Elitebook Temperature Monitor Manual
Hp Elitebook External Monitor Cable
This is about the best way I found of being able to monitor the temperature on an HP Elitebook.
When running the ‘sensors-detect’ command I selected all defaults apart from allowing the command to edit the configuration file.
It looks like coretemp-isa-0000 is where the CPU temperatures are shown. I can only get the status bar to show one temperature at a time – but this is sufficient for me to keep an eye on the temperature.