[SOLVED] My PC keeps instantly shutting down and rebooting

[Cglass]

Ive recently purchased a pre built pc and in a few games ive played it been randomly shutting down my pc instantly without warning and then rebooting it. I've done benchmarks with this pc before so it has been maxed out a few times without any dramas. But some games still crash my pc making me think its a power issue but how come the benchmarks never caused this issue?

 

[Zizo007]

Benchmarks might use less power than heavy games. What's your PSU and system specs?

 

[Cglass]

My pc is a PAX demo from PC Casegear and has an RTX2080ti and I7 9700k. The PSU is Premium basic series PB750W

 

[Blitz Blitz]

I'll check whole system first, then look for benchmarks and gaming. Check your psu. Check thermals, clean dust, reapply paste and change cooler if necessary. Test ram, hdd. Download some system, cpu, gpu diagnostics utility. Change cmos battery, update bios, reinstall windows. Also what pc you buy? It can be some problems with prebuilt system, if you wanna upgrade, or change something.

 

[Cglass]

It is very clean as i've only had it for 3 months now and it is water cooled CPU. Plus they used it and demoed games with it at pax.

 

[Blitz Blitz]

I'll go for warranty if you buy it from store, and not build by yourself. If you try fix it, can void warranty.

 

[Cglass]

Yeah Ill have to contact them