PC turning off during graphically demanding games
PC turning off during graphically demanding games
Hi all!
Just a note
: I've already asked this question on Reddit and PC FB groups, but I'm still stuck with the problem. This has been a persistent issue with my PC for a while now. I'm tired of relying on quick fixes like adjusting the CPU or GPU voltage.
When I first mentioned it, some suggested it was related to my power supply unit (PSU) – specifically the FSP Hydro Pro 550W. However, I've since upgraded to a newer model (ASUS TUF 750W 80+ Bronze), and the problem continues. I ran Cinebench and OCCT without any issues. But with 3dmark, it sometimes shuts down, other times it doesn't. When playing demanding games or those with poor optimization, my PC will power off without any error messages—almost as if I turned it off incorrectly. During startup, there are no error or warning screens; it boots normally. Additionally, neither the CPU nor GPU overheat during gameplay. When I play NFS Heat, the GPU stays at around 60°C and the CPU at 70°C max before shutting down without explanation. In Overwatch 2, the GPU remains below 60°C and the CPU below 65°C. I'm not sure what's causing the issue with my system. Initially, I thought it was the GPU, but this happened even after upgrading my GPU (GTX 1660).
I'm starting to suspect the motherboard might be the culprit, but I don't know how to diagnose it properly.
Please avoid suggesting I swap other components since I don't have any spare parts. I really hope someone here can assist me. Thanks!
Previous steps I completed:
Changed my old power supply (FSP Hydro Pro 550W) to a new one (ASUS TUF 750W), purchased the PSU brand new.
Reconnected my GPU to the motherboard.
Purchased a new cooler and reapplied thermal paste to the CPU.
Reconnected RAM modules and cleaned the pins—also swapped their slots.
Removed some dust from the PC interior.
Restarted Windows.
Disabled CPU boost and set "Processor performance boost mode" to off.
Swapped CMOS battery.
Verified that PSU cables are properly connected (not using an extension).
Conducted several stress tests such as Cinebench r23, 3dMark, OCCT, and Windows Memory Diagnostic (will run memtest96 today).
It does not shut down during Cinebench, OCCT, or WMD tests. It powers off during 3DMark Time Spy, but I still can't identify the problem because it uses GPU, CPU, and memory.
also verify each module independently within each DIMM slot.
run CrystalDisk or other detailed disk checking tests.
bring the system to a nearby service center and let them inspect components individually.
I shared some experiences earlier about my PC experiencing unexpected shutdowns when under heavy load, especially with the GPU involved. When temperatures increase and power consumption rises, it powers off completely without any BSOD. There are times when only the display turns off while the system remains active.
My hardware includes:
- Intel i7-9700F
- AMD 6600XT
- 16GB DDR4 RAM
- ASUS Prime H310M-E R2.0 MOBO
- ASUS TUF 750W 80+ Bronze PSU
- 1TB HDD (10K RPM)
- 1TB SATA SSD
- 512GB M.2 SSD
I made several changes:
- Swapped the old PSU for a new one (ASUS TUF 750W)
- Reconnected the GPU to the motherboard
- Installed a new cooler and reapplied thermal paste to the CPU
- Reattached RAM and cleaned CPU pins, including swapping slots
- Cleared dust from the PC
- Reinstalled Windows
- Disabled CPU boost and processor performance boost mode
- Replaced CMOS battery
- Verified PSU connections and used only the main cable
- Conducted stress tests (Cinebench r23, 3dMark, OCCT, Windows Memory Diagnostic, memtest96)
Results:
- Passed most tests except 3dMark, which crashes
- Does not shut down during Cinebench or OCCT
- Fails 3DMark Time Spy but works with GPU, CPU, and memory
- Shuts off only when GPU temperature rises and power draw increases
I consulted my brother, who has a Ryzen 3 2600 and a 750W PSU. He ran benchmarks on his system and found similar issues. I’m unsure if the problem lies with the motherboard or the GPU, but I’m planning to replace both components to prevent future shutdowns.
I noted this and it doesn't cause overheating, actually. If it's useful, I run games from the SATA SDD and the HDD.