A proper system tune-up will optimize your computer’s performance while deleting unnecessary files to reclaim space. A system tune-up can also correct errors that are already on your computer to prevent further problems from occurring. At Advanced Computer Diagnostics , we’ve made adjustments to thousands of computers, using professional-grade software and years of experience. We will make sure that no valuable data or software is lost in the process. We guarantee that your computer will perform better once our technicians have finished.