My WIN 7 PC had been running with NIS 2011 for a year with no problems. Before the subscription had expired I downloaded and installed the free upgrade to NIS 2012. The system began crashing with: STOP CODE 0x0000007F (0x00000008,0x807C5750,0x00000000,0x00000000).
I then uninstalled NIS 2012 (and had no NIS installed on the PC) and everything ran fine. I then installed NIS 2012 from my software disk that I had recently purchased and the system began crashing once again. Last week I installed NIS 2012 from a different software disk on three other computers in my house and they are all running fine. None of these PC's have crashed with a blue screen.
Who can give me some help as to what my problem is?