Computers and associated hardware can be prone to problems of malfunctioning, disk crashes, loss of data, and power problems. These can be fixed by outlets or individuals in Dublin, who offer computer and equipment repair and maintenance. Repair constitutes fixing malfunctioning or nonfunctioning equipment. Maintenance is for ensuring that the hardware and software function normally. With proper maintenance, it is possible to reduce the need for urgent repairs. Certain steps that are taken by service engineers include data backup, antivirus protection, firewall protection, cleaning of internal and external components to preven the buildup of dust, regular software updates, deletion of unimportant files, etc. Many hardware manufacturers also offer an insurance package to ensure standard performance by the hardware. Many service outlets have remote customer service and assistance, and onsite and warranty services. Package maintenance programs are also available, often renewable on an annual basis.