up-to-date: A term used to describe a method of keeping your computer's software updated. Microsoft Windows update service is a good example of this.

Computer Repair: The process of repairing broken hardware or software in a computer system.

Computer Installation: Installing a new computer at a location such as a home or office.

Hardware Failure: Relates to a specific piece of hard ware on your computer. If it fails (stops working) It can cause your computer to functiona abnormally or not at all.