No signal after playing a game for a while

[Snowy_]

Played game : Counter-Strike : Global offensive (CPU heavy game)

System specs:
5 y/o 750W PSU
CPU:i5 7500
GPU: Gtx 470
Ram: Corsair Vengeance 2400mhz 16gb
Motherboard: B250 PC Mate
Windows 8-64 bit. (Got warning that windows doesnt secure this proccesor on the current version of windows)

After playing csgo for a bit my monitor went black and said no signal, restart didnt work by pressing the button, system restarted but no signal. Turned pc off by holding power button and put it on made my screen come back on again.

(Did stress test using Intel extreme tuning unity, and it passed (Max temp cpu 55)

The mobo,CPU and ram are new.

 

[englandr753]

Id run windows update to make sure you have the latest patch installed to see if it takes care of the warning message you saw. Then I'd uninstall the video card driver, reboot the pc then reinstall the latest driver. Use DDU to remove the driver completely.

It wouldn't hurt to update your antivirus and malware program and run those too just to make sure that nothing is causing software issues.

My last thought is that 5 year old psu. What brand is it? Sometimes even if its a good brand, its old and a new psu is usually a great idea if its older than 2 years, imo.

I had an Antec 1200 watt psu that I reused to go with my new Asus Rampage V Extreme 3.1 mobo and 1070 video card and I was having similar issues. It may very well be a power supply issue. I bought a new Corsair RM1000x and have had 0 issues since.