Summer is here and just as you need to keep cool, so does your computer. It has vents which allow the air to circulate inside so laptops are best used on rigid surfaces. Using your laptop in bed, resting it on the duvet or a squidgy couch can cause problems.
Your desktop PC is the same. Check the vents aren't blocked by boxes, books and shelving. If the fan starts running, this may be an indication of overheating. If the screen freezes, give us a call.