PC dies while playing games

[blackid21]

spec:

proc: intel i7-6700

mobo: msi z170a krait gaming

ram: corsair vengeance lpx 2x8gb ddr4-2666

gpu: msi gtx1070 gaming x

psu: corsair cxm 750w

 

So this happened around this week, when i play games like rainbow six and apex legends for 1 hour+ my pc dies. I thought it was my gpu overheating so i reapply thermal paste and test it using OCCT. Surprisingly its not because of overheating i tested it for 1 hour and the avg temp is around 70c but when im about to close the OCCT gpu test window i moved it a little and my pc died again, so i reboot my pc and do the same thing i move the OCCT window again and same thing happened. Im not really good at this so i would like for some advice should i replace my gpu or is there anything i can do to save my current gpu? Any kind of help appreciated (sorry if my english bad its not my main language)

[Pittman90]

44 minutes ago, blackid21 said:

spec:

proc: intel i7-6700

mobo: msi z170a krait gaming

ram: corsair vengeance lpx 2x8gb ddr4-2666

gpu: msi gtx1070 gaming x

psu: corsair cxm 750w

 

So this happened around this week, when i play games like rainbow six and apex legends for 1 hour+ my pc dies. I thought it was my gpu overheating so i reapply thermal paste and test it using OCCT. Surprisingly its not because of overheating i tested it for 1 hour and the avg temp is around 70c but when im about to close the OCCT gpu test window i moved it a little and my pc died again, so i reboot my pc and do the same thing i move the OCCT window again and same thing happened. Im not really good at this so i would like for some advice should i replace my gpu or is there anything i can do to save my current gpu? Any kind of help appreciated (sorry if my english bad its not my main language)

what cpu cooler are you using? 

[blackid21]

28 minutes ago, Pittman90 said:

what cpu cooler are you using? 

cryorig h5 universal

[Pittman90]

1 minute ago, blackid21 said:

cryorig h5 universal

well I would think either something is overheating (not gpu) or your PSU is running out of power, have you checked other temps, maybe also check psu loads

[blackid21]

1 minute ago, Pittman90 said:

well I would think either something is overheating (not gpu) or your PSU is running out of power, have you checked other temps, maybe also check psu loads

may i know how do i know about psu load? 

[Pittman90]

2 minutes ago, blackid21 said:

may i know how do i know about psu load? 

you can try http://www.coolermaster.com/power-supply-calculator/

 

or i might be wrong but i swear that HWmonitor has that 

[blackid21]

21 minutes ago, Pittman90 said:

you can try http://www.coolermaster.com/power-supply-calculator/

 

or i might be wrong but i swear that HWmonitor has that 

ok so based on the website my recommended psu wattage is 408w and mine is 750w i think that way more than enough, unless the psu are broken as well. Should i replace it?

Also tested my cpu using OCCT for an hour and the temp is stable at 55-60c without dying, so thats why i dont think the cpu is overheating