CHANGED OIL , LOST PW WINDOWS CLUSTER & ON BOARD PC STOPPED WORKING,RUNS GRATE ?

What is your question?

JUST BOUGHT IT 75K runs new except tire pressure on PC LIGHT WENT ON HIT CLEAR NO OTHER ISSUES ? NEW TIRES COMING TOMORROW FIX IT WHEN CHANGE TO NEW TIRES ? LOST WINDOWS IN DOWN POSITION ? Must be a way to reset onboard pc to bring back problem ? All was well before change ? Thanks searching owners guide now ?