Ok so I recently upgraded my PC with fresh sticks of ram(8gb), an msi gtx 980 gaming 4G and a EVGA 600W +80 PSU. I am pulling my hair out trying to understand why what is happening is happening but hopefully someone here could lend some help. Basically what is occurring is total PC crashes while playing games, but seemingly only some games. By PC crashes I mean instantaneous shut downs as if the power went out. I have been playing a lot of Witcher 3 (a very graphically demanding game) and have not encountered a single PC crash, while playing games such as Hurtworld or Counterstrike Global Offensive will lead to a crash within 15-20 minutes of game play. I don't understand the relationship between the crashing and online games and its not stopping, making my experience with my new PC a total headache. Every thread i've seen is hinting at either an overheating mechanism kicking in or a PSU problem but I don't see how either of those are unstable in my case. The witcher naturally will have my PC running the hottest and even then with my fans my cpu will reach a max temp. of 59-60c and my gpu will get to around 79-82c. I bought my PSU around the time I got my card at best buy for 40 bucks, which seems like a decent price for quality. Can anyone help? Thanks in advance.