I recently moved my desktop to my home and when I went to connect it to the monitor, the monitor was not detecting it. At my dorm, I had it connected to my monitor through HDMI and it worked fine. However, when I went to connect it at home, the connection was not detected. I tested the cable on my laptop and it works so something must be wrong in the desktop. I tested both the motherboard and GPU HDMI slots. I didn't want to open it until I knew what to look for. Could something have gone loose in the desktop that I can simply fix to make the connection work again? The computer powers on and all components seem to be working properly. Thanks!