Combat Flight Simulator 3 crash

Got CFS3 for Christmas. Worked great for a month, then after a couple Windows Updates it started rebooting the computer whenever I either crashed my airplane, got shot down, or successfully completed a mission. The screen goes black and sys “Analog” and a couple other words that are not on the screen long enough to read right bfore it reboots. Reported the crashes to Microsoft when prompted, they say they are investigating. Have deleted and reinstalled video card driver and monitor driver. Anyone else seen this? Anyone got a fix?