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In computing, to "tweak" means to make small, minor adjustments to a system, program, or settings to improve its performance, fix a problem, or customize it to a user's needs. This can involve both software and hardware changes, such as adjusting a program's settings, fine-tuning background processes, or changing a hardware component's configuration.

Examples of tweaking a computer:

Software tweaks: Modifying application settings, such as adjusting audio settings for better sound quality, changing power options to extend battery life, or tweaking antivirus settings to balance security and performance.

Hardware tweaks: Making physical adjustments to a computer's components, such as overclocking a processor for higher speeds, which is a hardware tweak that can increase performance but also risks overheating if not done correctly.

Configuration tweaks: Adjusting the operating system's configurations or editing system files to achieve a desired outcome, such as customizing the display or improving the speed of the system.