It is important to know how to calculate the electricity usage cost and charges for every electronic devices and electrical appliances in your home so that you would not end up with a really expensive electric bill.
Accumulated temporary and unused files in a Windows PC can make the computer slow. CCleaner is a free, smart and safe to use tool that cleverly deletes useless files and also optimizing the registry database.
HD Tune is an excellent and reliable utility to test your hard drive and look for potential problems. Catching a failing hard disk at the earliest opportunity is important for the best chance of data recovery and backup.