PLYMOUTH IGNITION SWITCH NOT TURNING

I Just Replaced My Ignition Tumbler And I Am Having The Same Problem, It Worked Graet For About 4 Hours And Then Stopped. It Will Not Turn...

When I Put The Key Into The Ignition Switch, And I Try To Turn The Key, Nothing Happens. It Will Not Turn On. It's Like It Is Locked.

I Started My Car Yesterday To Listen To The Radio And When I Turned It Off I 4 Got To Close The Window So I Tried To Turn The Car Back On...