Computer maintenance keeps your computer running smoothly by performing regular tasks such as deleting temporary files, defragmenting your hard drive, and running virus scans. On the other hand, computer repair is fixing problems that have already occurred on your computer.

Computer hardware maintenance involves taking care of the computer's physical components, such as its keyboard, hard drive and internal CD or DVD drives. Cleaning the computer, keeping its fans free from dust, and defragmenting its hard drives regularly are all parts of a computer hardware maintenance program.

PC repair software is a set of tools that can find and fix various issues that can impact the performance of your PC. It is a comprehensive solution to diagnose and fix common problems such as registry errors, fragmented files, and malware infections.

Regular maintenance generally takes care of most of the problems especially those of data loss or corruption. So it should be given due importance. Troubleshooting is isolating the source of a problem and fixing it.