Is COM1 the board? When you disconnect the board, does COM1 disappear? If not, it's not your board.
I'm not familiar with your board; if it uses a micro-USB connector, make sure that you use a data/sync cable and not a charge-only cable.
The AIThinker ESP32-CAM doesn't have built-in USB so what USB-to-Serial board are you using to connect to it? You may need to install a Windows driver for the USB-to-Serial chip on your USB-to-Serial board.
Typically a USB-to-Serial board connects to the AIThinker with four wires.
GND -> GND
5V/VCC -> 5V
TX -> RX0
RX -> TX0
Then you need to connect the AIThinker GPIO0 to GND and reset to start the downloader. After you download the sketch, disconnect GPIO0 from GND and reset to start your sketch.
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