Question My PC crashes but fans spin up and lights stay on

Apr 15, 2020
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When ever i playing games my monitor decides to turn off and says HDMI no signal. My PC stays on and the fans keep running and the lights on my keyboard are on. I have to use the reboot button on my PC to get it working again. It happens with most off my games now such as Tarkov, world war z, cuisine royal but doesn't happen with war thunder and CSGO.
Specs ryzen 5 1400 4 core, 8 thread 3.2ghz
16gb DDR4 ram
Radion Rx 480 8gb
240gb SSD
500gb SSHD
600w PSU
WINDOW 10 PRO
moniter-Asus ROG swift PG248Q "24"