Computer Keeps Restarting
The computer restarts itself without warning, sometimes during specific tasks, sometimes seemingly at random, without you choosing to restart it.
Quick answer: Unexpected restarts are usually caused by overheating, a failing power supply, faulty RAM, or a driver conflict — in roughly that order of how often each turns out to be the cause. Note whether it happens during specific tasks (like gaming, which points to overheating) or randomly at idle (which points more towards power or software).
Likely causes
- Overheating causing an automatic protective restart, particularly during demanding tasks
- A failing or inadequate power supply, especially under load
- Faulty or failing RAM
- A corrupted or conflicting driver, often graphics-related
What you can safely check yourself
- Note whether restarts happen during specific activities (gaming, video, heavy multitasking) or seemingly at random
- Check whether the case and vents are clear of dust and the fans are actually spinning
- Check Windows' Reliability History (search "Reliability" in the Start menu) for a pattern or error around the time of each restart
When it needs a proper look
If restarts happen repeatedly and there's no obvious pattern you can address yourself, that's worth a proper diagnosis — repeated unexpected restarts can also risk file corruption over time.