Question Friend's PC now randomly shutting off - components still on though - after failed overclocking and CMOS reset. What's wrong?

[TheUltraMarine]

My friend recently grabbed a brand new Ryzen 9 5950x to replace his 3600, and he wanted to get cracking at overclocking it ASAP. So we used Ryzen Master, the program that overclocked his original 3600, and it ended being a spectacular failure.

Not sure if his specific processor just came short of the silicon lottery, but he wasn't even able to run 4.4 GHz at 1.375v without black screening. Get this though, whenever the system would *crash* the PC would still be on, fans, RGB and all, but the power button couldn't turn off the system, so he had to pull the plug to get it to shut off. After doing a little research and finding out how garbage RM is, I instructed him to do a CMOS reset so we could configure the values in the BIOS instead. We were able to confirm with a notification from the system when he went into BIOS that the CMOS values had been reset.

Though we haven't been able to get to overclocking again since I've been swamped with finals. But now the system just keeps randomly shutting off in the exact same way that it did when we were overclocking with Ryzen Master. He confirmed that it wasn't a thermal issue, as temps were staying below 80 Celsius at the time of the crash, so what exactly could be the issue?

Here's his part list:

CPU: Ryzen 9 5950x
Cooler: ARCTIC Liquid Freezer III 240 A-RGB
RAM: Corsair Vengeance 4 x 8 GB 3200 MHz CL16
GPU: MSI Gaming GeForce RTX 3070 LHR 8GB
PSU: Corsair RM850 (2021)

 

[Lutfij]

What is the make and model of your motherboard? BIOS version for said motherboard? If I were you, I'd have tried Curve Optimizer first and then fine tuned the details with the voltages/offsets a little. Ideally you should be working with 2 sticks of ram to reduce stress on the integrated memory controller(IMC) and if you're on a B550 chipset motherboard, then you're going to get a performance uplift going with a dual channel DDR4-3600MHz tight latencied ram kit.

 

[TheUltraMarine]

What is the make and model of your motherboard? BIOS version for said motherboard? If I were you, I'd have tried Curve Optimizer first and then fine tuned the details with the voltages/offsets a little. Ideally you should be working with 2 sticks of ram to reduce stress on the integrated memory controller(IMC) and if you're on a B550 chipset motherboard, then you're going to get a performance uplift going with a dual channel DDR4-3600MHz tight latencied ram kit.

It's a Gigabyte B550 DS3H motherboard.

EDIT: B550M to be exact, the micro-ATX model.

EDIT 2: Rev (1.0)

 

[TheUltraMarine]

It's a Gigabyte B550 DS3H motherboard.

And BIOS version F19.