A computer tune-up or speed boost service generally refers to a set of procedures aimed at improving the performance and speed of a computer that has become slow or sluggish over time. Here’s a breakdown of what typically happens during a computer tune-up:

1. System Cleanup:
    o    Disk Cleanup:
    o     Registry Cleanup:
2. Software Updates:
3. Startup Optimization:
4. Malware and Virus Removal:
5. Hardware Assessment:
6. Defragmentation: 
7. Adjusting System Settings: 
8. Cleanup of Temporary Files and Cache:
9. Driver Updates:
10. System Tune-up Software:
   
Overall, a computer tune-up aims to restore the computer’s performance to a more optimal state by addressing both software and hardware aspects that may contribute to slowdowns. It’s often recommended for older computers or those that have been heavily used without regular maintenance.