Can anyone help me get my Lexmark 5200 Working again?

My Lexmark 5200 got unplugged and moved while the carpets were being cleaned. When I plugged it back in, I got nothing but a flashing green light under the power switch. The printer does not react to the power switch, and I have tried disconnecting the power and USB cables and re-connecting them in all the possible orders (power first, then USB, USB first, then power, connect USB to computer first, connect USB to printer first, etc.) I have also tried gently nudging the print carriage, both with the power on and with the power off. None of this has helped. Is there anything else I can try before junking the thing and just investing in a new printer?