[Elecraft] K3 Bootup sequence?

[F5vjc]

When booting up my PC connected to the K3 it keys the TX several times
during the bootup sequence, I imagine when initialising the various
comports. I need to power up the K3 first before PC boot as I have added LP
Bridge to my PC auto start program list and it wants to see the K3 to
enable the connect port.

Is there a way to auto inhibit TX keying during PC bootup ( eg. placing the
TX into TEST mode)?

I believe there must be a way but can't find it as yet.

Thanks, 73 F5VJC