PC shut off randomly

[Sealth]

Hi, I'm trying to troubleshoot  a problem with my system lately
I'm having this problem about a month now my PC randomly shut-off like it lost power and turn back on (not blue screen or anything it just shut off) , but i do have a UPS and my house lost power many time the UPS kick in it able to handle the load just fine. This usually happen when i'm playing game a heavily GPU CPU usage kind of game i can't figure out what the cause of the problem from my feeling i was thing maybe overheat or power problem. Anybody every encounter the same problem with me or could figure out the cause? and if this keep happening will it damage my system?

Thank You for your answer

 

P.S. I'm using a 1500VA/1050W pure sine wave UPS my system full load is about 590-600w + 90w for my monitor

P.S.2 I'm terribly sorry for my English it's my second language  

[Beyond_The_Berm]

Are you monitoring your temperatures?  Sounds like its shutting itself off to protect itself.

 

Use MSI afterburner, CPU-Z, and GPU-Z to get a handle on where your temps are at now.  Apply new fan speeds to address an issue in MSI for the GPU and use your motherboards BIOS to control fan speeds for your case/CPU fans.

 

[Sealth]

3 minutes ago, Beyond_The_Berm said:

Are you monitoring your temperatures?  Sounds like its shutting itself off to protect itself.

 

Use MSI afterburner, CPU-Z, and GPU-Z to get a handle on where your temps are at now.  Apply new fan speeds to address an issue in MSI for the GPU and use your motherboards BIOS to control fan speeds for your case/CPU fans.

 

Yes, i'm using afterburner according to it OSD the CPU and GPU temp is around 70-75 c 

[Beyond_The_Berm]

3 minutes ago, Sealth said:

Yes, i'm using afterburner according to it OSD the CPU and GPU temp is around 70-75 c 

Nothing alarming there.  Next look would be the power supply, if it is a budget brand or something it may be over sold and under performing.