Had an issue where the computer was making a progressively loud sound sort of like an airplane engine. I thought it was an overheating problem as the loud sound did start right away. This only happened after about 30 mins or so of use. Went to Computer Trends to inquire about getting a cooling system and was shocked when the tech told my my computer was fine and just needed to be dusted. Turns out the was so much dust on the fan that when ever is sped up it made that loud noise. I bought a can of compressed air for $5.00 and dusted the inside of the computer myself. I was impressed with the service I received as the tech told me exactly what was needed to be done and in turn saved me from buying a part that was not needed.