pc randomly shut off

[zackie]

guys i need help this past few months my pc keep turning off by it self no shut down warning just completely turn off then one second it turn back on. and i notice is that when i open my pc around 1pm it can run for hours i can play game and browse something like that. but when night times come especially 9:30pm-10pm and so on the problem started. my pc keep turning off sometimes it can run for about 5min to 10 and then it shut off no warning. and i dont know why. i suspect its my PSU i use DeepCool DA500m. the question that i keep thinking is why every night only.. anyone can explain to me why is this happening? please i need your help..

i have intel core i3 4170, msi h79 gaming 3 mobo, msi GTX 1050ti, 8GB avexir dd3 ram DeepCool DA500m PSU.

[zackie]

Just now, Alexsolo said:

I would look to change the PSU or monitor temps to make sure it isn't overheating!

its not overheating at all around 12:30pm i played Assassins Creed and my temperature is around 40-50 degrees it not turning off until around 9pm boom it shut off then 1 sec turn back on after 10min or so it shut off again and it happens every night.

[PokeCatz]

Yeah the power supply is probably dead. It's not the most reliable power supply. 

If you're going to buy a new power supply, I would suggest a Tier 4 or up.