A computer that freezes or crashes is communicating that something is wrong. The symptom alone doesn't tell you what — the pattern does.
RANDOM VS REPRODUCIBLE
Random freezes — at no particular time, during no particular task — point to hardware: failing RAM, overheating, a dying drive, or an unstable power supply. Reproducible crashes — consistently when you open a specific program or do a specific task — point to software or driver conflicts.
⚠️ If your screen shows visual artifacts during a freeze — distorted graphics, wrong colors, horizontal lines — that is almost always a failing GPU. This is hardware failure that won't improve on its own.
WHERE TO START
- Event Viewer — Windows logs every crash. Look for Critical events around the time of each freeze — the error codes narrow down the cause significantly.
- Temperature monitoring — HWMonitor shows CPU and GPU temps. Above 90°C under load means thermal throttling and shutdowns are your problem.
- RAM test — Windows Memory Diagnostic or MemTest86 identifies failing RAM. Bad RAM causes random unpredictable crashes that mimic almost every other problem.
- Drive health — CrystalDiskInfo reads SMART data. Reallocated sectors or pending sectors mean imminent drive failure.
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