Ethernet ports on alix stopped working(after 22h of using)

Hi, I installed on CF card routeros on alix board.
I use it for about 22hours. Ethernet ports stopped working.
I want now purchase key from mikrotik site(I hadnt till now verified my bank account).
I dont know what to do now.
I cant write the license key to alix, because - usb keyboard is not detected and ethernet ports stopped working.
Can anybody explain?
What to do?