Dust

Common household dust is the enemy of computers. Have you noticed that your computer or laptop seems to attract dust?
It is a good idea to keep the place you use your computer dusted, and to open up the case of your computer and dust with an air duster and hoover every so often (do this carefully).
When your computer or laptop is turned off you can give your screen a wipe- you can buy special screen wipes- but a damp cloth works fine- and also wipe the keyboard clean and dust between the keys.