Computer repair is the process of identifying, troubleshooting and resolving problems and issues in a faulty computer. Computer repair is a broad field encompassing many tools, techniques and procedures used to repair computer hardware, software or network/Internet problems. Computer repair is also known as PC repair.

Computer repair is handled by a specialized computer repair technician. Typically, a hardware fault requires the physical review of a computer and testing for abnormalities. Suspected components, such as random access memory (RAM), hard disk, power supply or optical drive may be individually checked, troubleshooted or replaced if an error is detected. This usually requires special equipment and accessories to disassemble and reassemble the computer.

Software-based computer repair issues are generally related to operating system (OS) configuration or updates, installed applications, viruses and other software services. Similarly, computer repair for network/Internet issues allow a computer to completely utilize available and network services.