S2209Wb, blank screen, blinking white power button

I have a Dell monitor S2209Wb and a Dell Inspiron computer. several months ago we had a power interruption and when I tried to start my computer, I had a hard time getting the monitor to start back up. It was white for a long time. I kept turning the computer off and on and it finally started. A couple days ago a circuit breaker tripped while the computer was in use. Upon start up, the monitor was white for a while. Now the screen is black and the power light is blinking white. I cannot turn the power off with the button. I think the computer is working fine. When I turn it on, I can hear it working and I can hear the windows start up music. Everything is plugged into a surge protector. I have been reading some of the solutions on here and I have tried to unplug everything and hold the button in and then plug back in. Maybe I am missing something. Most of the solutions are for different colored lights on the power button. I didn't find anything for blinking white light. Is my monitor done or what? I hope not. It has been a good one.