Hi sanaejames,
You mentioned it was working earlier when you just installed it right.
Have you checked the connections again just to see any lose connections if any, and see if there is a function to put it in sleep mode or something there is a red light you said, then it means it has power but it just will not turn on to make it function.
Also check the unit if there is a USB inserted in the USB port,Also if there is a Memory Card in the Memory Card Reader or Slot then try restarting the system, Unplug the power from the connection then reconnect it after maybe 3-5 second, then try turning the unit ON again make sure the USB if any was connected is removed.

I hope that this helps.