Customer brought in this computer and it’s been giving me a hard time.

For reference, I work at a tech repair store, a customer brought in this computer and claims it’s been opening programs on its own and is no longer taking any inputs from the keyboard or mouse. I turned it on, plugged it into ethernet, then went on a smoke break to let it boot up and came back to the power supply sparking everywhere and this logo appearing on all of the monitors and TVs in the store. Has anyone seen this problem before with other devices? If so, what fixed it?

For reference, I work at a tech repair store, a customer brought in this computer and claims it’s been opening programs on its own and is no longer taking any inputs from the keyboard or mouse. I turned it on, plugged it into ethernet, then went on a smoke break to let it boot up and came back to the power supply sparking everywhere and this logo appearing on all of the monitors and TVs in the store. Has anyone seen this problem before with other devices? If so, what fixed it?