Hello again,
probably I've found the problem and workaround. There is some problem with Asmedia drivers for USB 3.1 module, so the temporary solution was to turn off USB 3.1 in BIOS.
I'm not sure why it freezes, but I guessing, that ImgBurn scan for devices and when it goes to USB check, some fault occurs and it stops responding.
If someone needs some more info just search about problems with Asmedia USB - I've looked and it seems to be popular.
Ps. It is strange that it worked (searched) well in debug mode, but not in normal.
Best regards,