If you do not get a COM port showing up then you are NOT going into loader mode correctly. You must keep trying to do that before giving up !
From the developers guide https://www.ghielectronics.com/docs/39/fez-hydra-developers-guide
To update the loader, you must erase the device and then deploy the new loader. To begin, connect pin eight on socket three or four to ground, power the board, wait five seconds, then unground the pin. If your FEZ Hydra has a small button just above socket 9, you can hold that down while powering the board instead of grounding pin 8.
After you do that, the device will show up as a COM port in the Devices and Printers menu in Windows. Make note of the COM port number.[/quote]
COM1 is probably something that already exists on your PC - no wonder it doesn’t respond correctly, and doesn’t program the Hydra (because it’s not the hydra).
You really must get it to boot into loader mode before you worry about going back to another PC.
Here’s a trick I learnt when updating my Hydra. With the socket quick reference open on screen near you so you can make sure you have the right pins, https://www.ghielectronics.com/docs/305/gadgeteer-sockets-quick-reference get a paperclip straightened so you can roughly touch the two pins with one end. Plug the Hydra in to the PC normally, and open Device Manager so you can see the USB device (it should show GHI debuggable netmf device). If you’re right handed, hold the board in your left hand, with a finger where you can hold the reset button down. Then, press and hold reset, then touch pin 8 and 10 with the paperclip, when you think you’re touching them both at the same time release reset without moving the board. Repeat this until you get a COM port showing up not the debuggable netmf device. (last time I tried this I was getting something like 1 in 5 successful at the start, then I was getting more like 95% success after a little practice)