Question Display signal is suddenly lost and PC reboots while gaming ?

Sep 9, 2024
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MBD: B550M Auros Elite (with latest drivers through the Gigabyte App Center)
CPU: Ryzen 5700G (with latest drivers through the Gigabyte App Center)
GPU: Sapphire Pulse RX 6700 XT
PSU: Corsair CV650
Display: Dell 60hz DP cable (only 1)
RAM: 1 x 16GB Corsair Vengeance 3000Mhz (slot 3 on MB)
OS: Windows 10 (latest)

Got this PC a little more then a year ago, so everything was working fine all from the start, i had been playing lots of AAA and AA titles and davinci resolve rendering and nothing was bad, had changed ram speed to 29.33, above 4G enabled. No gpu or cpu undervolt or overclock ever.
GPU software last adrenaline version then current.

Power used was mostly 30-60w CPU and 30-80w gpu.
CPU temps in 40-67 (75 or 77 on 100% load) and gpu temps 40-66 (summer).

Suddenly 2 day ago playing game Once human and suddenly pc kinda crasted like hang or freeze(i could hear the freeze sound) and lost display then restarted. PC was running but didn't start, lights and fans on were on.

I then take the plug out then back in and started pc. It turned on for like a minute with the display until the gpu software started then again freeze or hang, no display and pc rebooted fans lights running but didn't turn on.

Then yesterday I took Everything out (with cmos battery) cleaned and put back in. Then everything was working fine, i updated the gpu to latest ver drivers and did a factory reset on install, restarted and I kept playing for like 2 hours, nightmare was over.

Then today I turned on PC and started the game but 5 mins in, freeze or hang (i could hear the freeze sound) lost display and pc rebooted but never turned on.

i dont think DP cable or ports on either gpu or display has issue cuz the pc or game would still be running, just display would turn black, but its like pc freezes and turns off and then on itself but no display. though fans and lights are on.

Never happened before, just started two days ago.

There are no display distortion or anything that might suggest gpu dying or anything.

I don't understand what might be the issue or is gpu gone or what, need help.