Same exact thing happened to me about a month ago. I made a thread about it and people were saying it was more than likely gg's fault. So I googled something like gameguard makes my computer restart and some of the results were on comodo's help forums. Apparently one of gg's latest updates made it not compatible with comodo stuff and so it restarts your computer whenever something with gg loads up. But yeah, it sucks cause comodo's firewall is really good
