Technical service in computer and laptop repair can include a wide range of tasks, depending on the specific needs of the customer and the skills and expertise of the technical service provider. Some common services that may be provided in a computer and laptop repair service include:

1. Hardware repairs: This may involve replacing faulty components such as hard drives, RAM, or motherboards. The technical service provider may also be responsible for identifying the root cause of hardware issues and taking steps to prevent them from occurring in the future.
2. Software troubleshooting: This could include diagnosing and fixing issues with operating systems, drivers, or other software that is causing problems on the computer. The technical service provider may also be responsible for installing or updating software as needed.
3. Data recovery: If a customer has lost important data due to a hardware or software issue, the technical service provider may be able to recover the data using specialized tools and techniques.
4. Virus removal: If a computer is infected with a virus or malware, the technical service provider can help remove it and restore the system to normal operation. This may involve running antivirus scans, manually removing malware, and repairing any damage that has been done to the system.
5. Upgrades: The technical service provider may be able to help customers upgrade their computers by installing new hardware or software. This may involve adding additional RAM, upgrading the processor, or installing a new graphics card.
6. Networking support: This may include helping customers set up and troubleshoot home networks or troubleshooting connectivity issues with internet service providers. The technical service provider may also be responsible for configuring routers, modems, and other networking equipment as needed.

Overall, the technical service provider is responsible for identifying and resolving issues with computer and laptop systems to ensure that they are functioning correctly and meeting the needs of the customer.