NIC disabled in AWS instance

Nothing makes you feel dumber than disabling a NIC while in RDP, but here I am :) I have mounted the volume on another instance and tried editing the registry. I have tried enabling auto logon and using runonce to run a netsh command to enable the NIC, but that does not work. I read something about enabling the NIC through the registry directly, but have had no luck in doing this.

Has anyone dealt with this type of issue? I'm going nuts!

Thank you!

Create AMI from that instance. Launch new instance from that AMI but in VPC, there you will have option to add another NIC. Access through new NIC.