Flex-3000 Power Relay Not Engaging

I'm wondering if anybody out there has experienced this problem. When I turn on my Flex-3000 I no longer hear the power relay engage and the computer no longer recognizes the radio. It work the night before when I shut everything down, but now it doesn't work. Nothing has changed since the previous night's use. I'm using Windows 7 64 bit. I've been using my set up since June with no problems.

Has anybody else out there had this problem?

Thanks,
Greg
NX8P