Symptoms
- Crashes, blue screens, or freezes started after overclocking the CPU, GPU, or RAM
- System is stable at default/stock settings
- Crashes happen more under heavy load, like gaming or benchmarking
- Temperatures are within normal range despite the crashes
Likely causes
- CommonOverclock settings too aggressive for the specific chip's stabilityEvery individual chip has a different real-world stability ceiling, regardless of advertised specs.
- CommonInsufficient voltage for the applied overclockHigher clock speeds usually need more voltage to remain stable.
- PossibleRAM overclock (XMP/DOCP profile) unstable on this particular motherboard/CPU combinationEven 'plug and play' memory profiles can occasionally be unstable.
- PossibleInadequate cooling for the increased heat from overclockingEven a stable overclock on paper can cause thermal throttling or shutdowns without enough cooling.
What to do
- Revert all overclocks to default/stock settings first to confirm they're actually the cause.
- If stable at stock, reapply the overclock more conservatively, in smaller increments than before.
- Increase voltage slightly if the overclock is borderline unstable, staying within safe limits for your specific component.
- Run a stability test (like Prime95, OCCT, or a GPU-specific tool) for at least 30–60 minutes after each change.
- Check temperatures during stability testing to ensure cooling can handle the overclocked settings.
- If you can't find a stable overclock that also stays cool, it's reasonable to run at stock or a smaller, safer overclock instead.
Tools and parts
- Stability testing software (Prime95, OCCT, or similar)
- Temperature monitoring software
When to call a pro
If you're not comfortable with voltage and clock adjustments, a PC builder can tune a safe, stable overclock for your specific hardware.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.