Working,Screen goes black, 5 beeps, fan full speed

My specs:

- Asrock X570 pro4 motherboard. BIOS 1.72 untouched since November 2019, all was very stable until now.
- Ryzen 3600 with tower cooler
- 2x8GB RAM HyperX PC3200 (compatible with my motherboard on Asrock site)
- Asus Geforce 1050 Ti Dual (nearly 3-year-old).
- 4 chassis fans.

The issue: the screen goes black after a few moment (could be hours) since about 4 days. On reboot it beeps 5 times and stays black. If I unplug the computer, and reboot a couple of hours after, no beeps and it works again. The screen goes dark under windows or web surfing sometimes.

Once it goes dark, I hear fans running at full speed.

I do hesitate between two faulty components:

- PSU, but voltages are OK. Model 80 plus, 600W, Cougar VTE 600
- my Old GPU. I cleaned it, removed all the dust and replaced the thermal compound.
The system was stable since built date (November 2019). No change on it and I didn't move the case too.

Any suggestion?

Yeah, seems you are right, my GPU is dead. Just put a brand new GTX 1650 Super inside and it's working. The 1050Ti was less than 3 years, I will check warranty with Asus.
Best,