How to fix the MMI system in an Audi A6?

I recently purchased an Audi A6 and the MMI system has stopped working. Whenever I try to use it, it just shows a blank screen. Has anyone experienced this issue and knows how to fix it?

It is important to first check if the MMI system is properly connected to the car's wiring. You can try unplugging and replugging it to see if that solves the issue. If not, it might be a problem with the software which can be updated by your dealer.