monitor keeps turning off by its own when many game objects load

[Media Persuasive]

sorry for bad english. i am not in america but an english speaker.

when i was playing gmod and grand theft auto v. it was fine but as soon as many objects/entities loaded my monitor and keyboard, mouse turns off but my pc did not turn off (my lights on gpu, etc)
i could turn it on again by replugging and that's it, but it's still happening. my uncle said that "the ram causes this.." but when i ask on tomshardware they said it's psu. psu is meant to turn power to your pc why are they saying at my psu?, my uncle said that "my ram speed is 2400mhz it needs higher." so we bought another ram with 3200mhz but my processor doesn't support thanks intel but i always think that overheating causes this.

what hardware or any stuff causes this?

pc specs:

GPU: Nvidia GeForce GTX 1070
CPU: Intel(R) Pentium(R) CPU G4560 @ 3.50GHz (4 CPUs), ~3.5GHz
Memory Size 8192MB

[Media Persuasive]

oh by the way this happens randomly in gameplay.

[_I_]

faster ram will only help the igpu
with a dedicated gpu it will make no difference

if its turning off, then odds are its a weak power supply
1070 isnt a heavy power draw gpu, but if the psu cant keep up it can cause crash/bsod/reboots or just turn off

check windows logs and see if there is anything before the unexpected shutdown

[Media Persuasive]

Opprinnelig skrevet av _I_:

faster ram will only help the igpu
with a dedicated gpu it will make no difference

if its turning off, then odds are its a weak power supply
1070 isnt a heavy power draw gpu, but if the psu cant keep up it can cause crash/bsod/reboots or just turn off

check windows logs and see if there is anything before the unexpected shutdown

how do i know if i am using dedicated gpu, And how to check windows log?
i think my graphics card is dedicated will it still happen?

[Phénomènes Mystiques]

My PSU has "ECO" Mode that literally is a power throttler for the PSU. If you see "ECO" mode, turn it off. Some motherboards also have "ECO" mode in the BIOS settings and sources say turning it on or off may help also.

But the troubleshooting should start where this question is asked,

"Was the PC working fine before under the same conditions?"

[Media Persuasive]

Was the PC working fine before under the same conditions?

yes sometimes. When i play any game before, it works just fine.

my psu is Thermaltake Litepower 650 W and they said its dreadful. And my psu has no eco mode
what should i do??

[_I_]

get a better power supply

select country on top right corner
https://pcpartpicker.com/products/power-supply/#m=337,11,14,71&e=4&A=650000000000,2050000000000&p=1,2&sort=price&page=1

[Bad 💀 Motha]

Thermaltake Litepower 650W comes with a 2-year warranty; that right there is a very tell-tale sign of a bad PSU.

Go with a better brand / model; most that are Gold or Platinum rated should have 7-10 years warranty.

[Bad 💀 Motha]

Depends, what Motherboard is it?