CANNOT FINISH GAME

Hi I have encounter to destructive glitches with NFS payback. The first one is not so bad. My computer will literally shut down to a black screen and turn my computer basically off and will not let me turn it back on with the case power on button. I noticed something odd with the way my computer crashed as the light for my CPU block is still lit meaning power is still on. My computer is litterally put into a limbo and at first sending into a rage. As this is not any cheap computer and cost lots of money to purchase and build. Lucky and kind of scarily I had to turn off my power supply until I saw the light go off. This problem occurs as the first instance not so bad now I just know that should not take the Buick GNX to the forest tune up shop as that crash happens. Ok negligable as I will jsut avoid that shop with a GNX. Which I only used at the beginning still this shouldn't happen. The second one however IS NOT OK. My computer literally crashes in the same way as describe when I am playing the first race of the Outllaws Rush. This is crazy as it happens right when I finish the first leg. Luckily and somehow it didn't happen when I played it the second time. HOWEVER now it crashes when I am playing the second leg and not even at the end. When I am in mid race it does that. Now I am stuck because it is just this mission from what I can remember of it crashing my PC. THIS IS BS. As now my game is useless and in limbo much like my pc when the game crashes it. THIS IS UNACCEPTABLE AND NEEDS TO BE FIXED YESTERDAY! For more info like my pc that can be given upon request. I have been waiting for this game ever since NFS 2015 stop getting updates and got stale. I rarely buy games now and this is the one I have been waitng for. This is very frustrating and shows the lack of preparedness for the release of payback at ghost games.