Most of these faults trace back to software or heat, not a dead component. Below is an ordered, South African gaming checklist for the symptom in the heading, written so each step is something you can verify yourself before booking a repair or buying a replacement.
Quick Answer
Most of these faults trace back to software or heat, not a dead component. This usually comes down to drivers, an unstable EXPO profile or background load rather than a faulty Core Ultra 9 285K. Run a fixed 20-minute test after each change and keep the one that holds at a steady frame rate or a stable temperature under 85C.
Driver and BIOS hygiene
Roll the GPU driver back to the last stable release, then do a clean reinstall using DDU so leftover files do not clash. Update the chipset package straight from the AMD or Intel site rather than trusting Windows Update to pick the right version.
Memory stability checks
Drop to two sticks in the correct A2 and B2 slots if four-DIMM configs refuse to post cleanly. Re-test with the EXPO or XMP profile off; an unstable 6000MT/s kit can throw stutters and crashes that look like a board fault.
Cool it down first
Confirm the case has a clear front-to-back path and that no cable is resting against a 120mm or 140mm fan. Reseat the cooler and apply a fresh pea of paste if temps spiked after a recent strip-down.
Power plan and supply
Verify the PSU wattage matches the load; a high-end card wants real headroom, so a 1000W unit is a sensible floor for top builds. Verify the PSU wattage matches the load; a high-end card wants real headroom, so a 1000W unit is a sensible floor for top builds.
FAQ
How long should each test run?
Use a fixed 20-minute load that reliably triggers the fault. A shorter burst can hide a thermal or memory problem that only appears once the system is fully warmed up at 80C or higher.
Is the Core Ultra 9 285K actually the problem?
Not until the software, heat, power and cable checks all pass. The Core Ultra 9 285K is the platform under review, so rule out the cheaper causes first and only suspect the hardware once a clean reinstall and a default-BIOS test still fail.
Should I reset my overclock or EXPO profile?
Yes, as a test. Turn off EXPO and any GPU overclock, run the same load, and see if the fault disappears, since an unstable 6000MT/s kit is a common hidden cause.
Pro Tip
one variable per test: adjust a setting, re-run the same 20-minute load, then decide.