Nowadays, the use of computer systems is necessary and important in an organization or business that manages and conducts activities in all areas, including customer service, marketing and sales activities, customer relationship management. and produce financial statements, etc. As we can see, the uses of computer systems are becoming more and more widespread and widely used in organizations around the world to protect and organize the organization properly, securely to keep their system data and operate their organization gently. .Although every business or organization has policies and procedures designed to prevent problems that will occur or the effects of an outage, the computer system may be vulnerable to disruptions or breaches resulting from a natural disaster, d 'a man-made disaster, a criminal activity, a pandemic. or any other event beyond our control. The failure of the IT system that goes down due to any reason could disrupt the functioning of the organization, result in loss of customer and will also impact the profitability of the organization. The problem that some companies face has given them a problem that they don't believe in. it will happen to their system. To avoid computer system failure, businesses need a system failure recovery plan that will attack the system at any time. The first way to prevent computer system crashes is to create a security password. This is the basic safety precaution that every business should take. It's about having good password and security for access controls to the company network. Not only backing up files, this action can further prevent security and avoid incidents in the business. The second way to avoid a computer outage is to perform a backup schedule. This is the first basic middle of paper ......p way and the simplest way to defend it, comparing when the organization might lose data and the time lost in productivity if the Data is probably infected and possible to restore it again. Data is valuable to a business and must be stored securely and correctly. Viruses and spyware commonly used to damage and steal information from an IT company can be resolved and dealt with. It is worth for a business and organization to use it and update a system computer every month to avoid breakdown. Use a firewall. Firewalls prevent infiltration by hackers and other malicious threats. You should maintain a well-maintained firewall between your computers and the Internet, as well as between your computers and your internal users. If you are a home user, you must have firewall software implemented on your home computer and/or home router..?