Fried Monitor

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So, I wanted to ask for help/advice. I just finished building my own desktop and was testing everything to make sure it worked, and ended up frying my monitor. I want to ask how to proceed. Details below:

I first tested the desktop, and when I flipped the switch it turned on, motherboard light up, fans started, optical drive opened/closed, USB ports were live, etc.

So I was about to plug it into a new 21.5" Asus monitor, which I had tested and found to be working upon arrival, in order to start into the BIOS settings. While the desktop was on, I plugged an HDMI cable into the I/O port on the motherboard and connected the other end to the monitor. As I then began to plug the monitor's three-pronged power supply plug into a grounded outlet, it shorted the monitor in a blast of light and sound and the monitor refused to turn on thereafter. It wouldn't work in any of the outlets in the house. The desktop was also hit by whatever electrical problem because it turned the entire desktop off at the same time, but the desktop restarted fine afterwards and the connecting HDMI cable worked for other devices.

Also, the desktop and the monitor were plugged into two separate outlets at the time of the short if that bears any relevance.

I'd like to ask how to proceed. Obviously I can't move forward with the new desktop until I can hook up a display, and I'd like to test if the motherboard's HDMI port still works, but I don't want to sacrifice any more monitors in the process. What should I do, /g/?

Thanks in advance.