What could be a reason for unexpected pop-ups on a computer?

Unexpected pop-ups on a computer are often indicative of malware infection. Malware, particularly adware, can generate intrusive pop-ups that appear even when the user is not actively browsing the web. This malicious software often gets installed without the user's consent or knowledge, usually bundled with free downloads or from malicious websites. As a result, a computer infected with malware can display a plethora of unwanted advertisements, offers, or alerts that can disrupt the user's experience and pose security risks.

In contrast, increased internet speed, installation of legitimate software, and regular computer maintenance are not typically associated with the generation of unexpected pop-ups. While faster internet might allow more ads to load quickly, it doesn’t directly cause pop-ups. Legitimate software installations usually include clear user agreements and functions without causing disruptive advertisements. Regular maintenance helps keep a computer running smoothly but does not lead to increased pop-ups unless unhealthy software is present. Therefore, identifying malware as the source of pop-ups is critical for safeguarding the computer and ensuring a seamless user experience.