I built or bought this PC in early 2025, and it has had stability problems almost from the beginning. My previous computer failed after a blue screen, and the only part I reused was the RAM. The early blue-screen problems were eventually resolved, but I now deal with Opera tabs crashing, random game and Discord crashes, black screens followed by restarts, and Windows Update failing to install the "Windows 11, version 25H2 (repair version)" update. I am not very experienced with troubleshooting and would appreciate help identifying whether this is a BIOS, memory, CPU, Windows, or other hardware problem.
Specs:
- Motherboard: ASUS Z790 Gaming WiFi 7
- CPU: Intel Core i9-14900K
- Cooler: Corsair Nautilus 240 RS ARGB
- Case fans: iCUE Link RX120 RGB with hub
- Memory: G.Skill Ripjaws S5 32GB, 2x16GB DDR5-6000
- GPU: GeForce RTX 3070
- Power supply: Darkstorm 850W
3 Answers
The i9-14900K generation is known for stability and degradation problems, especially when the motherboard applies aggressive default settings. Update the motherboard BIOS to the latest stable version, then load Intel-recommended defaults rather than using automatic overclocking. Run a proper memory test such as MemTest86, since the reused RAM could still be faulty or unstable at DDR5-6000. If problems continue, test with safer memory settings or known-good RAM. Back up important files before making BIOS or storage changes.
Start by checking the crash logs. Look in C:WindowsMinidump for any recent dump files. Copy them somewhere else, compress them into a ZIP, and inspect them with a crash-dump viewer. If the folder is empty, configure Windows to create small memory dumps so the next blue screen leaves useful information. Also check Event Viewer under Windows Logs > System for errors around the exact time of each black screen or restart. The error codes may help identify whether the problem is software, memory, the GPU, or the CPU.
Try repairing the Windows system image from an elevated Command Prompt. Run DISM /Online /Cleanup-Image /RestoreHealth, let it finish even if the progress appears stuck for a while, and restart afterward. Then check Windows Update again. This can fix corrupted Windows components, although it will not solve a failing CPU, RAM kit, power supply, or graphics card.

I have not updated the BIOS because I am not familiar with the process. I have reset Windows several times, but the same problems happened both before and after the resets. I will look into the BIOS instructions and memory testing.