Dell N4064 Staus light

Our Dell N4064 Non stacked always had a blue light top left when operating. It would flash red during boot but always come back blue. Today our unit had to be bounced and when it came back up there is no light on the unit did proceed through the boot with no errors via putty. The switch is functioning and there are no errors with hardware that I can see but the status light is off. We have a secondary N4064 that we use in case of DR and the status light is blue. Is there something I can check to see why the status light is not on any longer.