On the fourth of six iterations, a team member reports their computer is not working during iteration planning. What should the project manager do next?

As a project manager, your role is to remove impediments and facilitate the team's progress. A non-functional computer directly impacts a team member's ability to contribute, making it a critical impediment. Facilitating a priority resolution with the IT department directly addresses this by leveraging your influence to expedite the fix, ensuring the team member can resume work quickly and minimize disruption to the iteration. Suggesting the team member contact IT is passive and doesn't leverage your role to prioritize the issue. Updating the issue log and escalating to the product owner is an administrative step that doesn't immediately resolve the technical problem. Asking other team members to cover the work might be a temporary workaround, but it doesn't solve the root cause and could overcommit other team members.