USBUIRT causing computer to reboot

I have been using the USBUIRT with Homeseer for a year. I love it!
Something has gone wrong. My computer reboots everytime an IR command is sent to the USBUIRT. I have unplugged the USBUIRT from the USB port; the computer is now stable. How can I determine if this is a hardware or software issue? Perhaps a registry problem?
Any suggestions would be greatly appreciated.
Thanks
Steve Q
Something has gone wrong. My computer reboots everytime an IR command is sent to the USBUIRT. I have unplugged the USBUIRT from the USB port; the computer is now stable. How can I determine if this is a hardware or software issue? Perhaps a registry problem?
Any suggestions would be greatly appreciated.
Thanks
Steve Q