Repairing damage to a laptop can be difficult if you don't know the exact cause of the problem. Therefore it is necessary to diagnose the cause of the damage before doing the repair. Diagnosing the cause of damage can be done using the help of an expert system application. By using an expert system application one can easily analyze the causes of damage as appropriate when consulting with an expert. In addition, with an expert system application one can also learn to know the patterns or diagnostic paths of a problem on a laptop.This Laptop Hardware Damage Diagnosis Expert System Design with forward chaining inference method. The programming language used is the PHP (PHP Hypertext Preprocessor) programming language based on the Laravel5.4 framework as well as Javascript, with MySQL as a Database Management System (DBMS), and Sublime Text as an editor. Laptop Hardware Damage Diagnostic System which is focused on processing performance and accelerates identifying the location of damage to laptop hardware that repairs laptops with parties. With the expert system as a diagnostic tool to damage laptops, it can simplify performance in repair services, save time, provide appropriate, accurate and efficient solutions at Gama Computer Technology.

Keywords: Expert System, Diagnosis, Laptop Hardware Damage, Laravel