Is your laptop overheating?

During the past year, LTS has seen an increasing number of laptops requiring service because of airflow and overheating issues. Because of their compact design, airflow is more critical to proper functioning of laptops than desktops. The CPU, graphics processor, and hard drive can all generate significant amounts of heat which must be expelled from the system. To do this, one or more fans are used, with air intakes and outlets generally on the sides or back of the unit. Some models, particularly more inexpensive ones, use air intakes on the bottom of the system. This leads to problems because dust and hair are pulled inside
over time, which restricts airflow and can lead to overheating. Also, resting the laptop on a soft surface like a blanket or sofa cushion can block the air intakes if they are mounted on the bottom.

If you notice your laptop suddenly shutting off or restarting, or the display flickering or going black, you may be experiencing overheating difficulties. Check the air intakes and outlets for signs of dust or other blockage. You can use compressed air (available at office supply stores) to clean out vents/airways. Also try to use the laptop on a clean, hard surface that allows good airflow under and around the sides of the computer. Finally, if you are shopping for a new portable, you should ask about the location of the air intakes and outlets, and avoid units that have them on the bottom.

If you have additional questions, contact the Help Desk at 8-4357.

March 17, 2005 article by Jake Ruttle (jtr2@lehigh.edu)