Client says screen shows message about cover removed but that has been there a while.
Someone shut it down to change out a UPS apparently, now when this machine is turned on it
emits a beeeeeep-beeeeep, a 1-second long beep followed by 1 second quiet, then repeats... iow it's beeping every other second.
It also shows message System fan not located. Would this be the reason for the beeps?