Computers protect themselves from heat damage by slowing down and shutting off. That means a chronically overheating computer is running slower than it should — potentially all the time — and working toward a hardware failure you could prevent.
THE WARNING SIGNS
- Fan running constantly at high speed during light tasks — Normal under load; abnormal when the computer is essentially idle.
- Unexpected shutdowns — The CPU hit its maximum temperature limit. This is a safety feature telling you something is wrong.
- Sluggish performance under load but fine at idle — Classic thermal throttling. The processor reduces its speed to generate less heat.
- Hot to the touch — Warm is normal. Uncomfortable to touch is not.
⚠️ GPU overheating shows differently — screen artifacts, graphical glitches, or the display going black while the machine stays on. GPU heat damage is permanent. If you see visual artifacts under load, stop and investigate immediately.
THE FIX IS USUALLY SIMPLE
For desktops: dust accumulation on heatsinks and fans. Compressed air and 20 minutes of cleaning. For laptops: dust plus dried thermal paste. A cleaning and repaste service typically costs $75-100 and completely restores cooling performance.
Rather have a professional handle it? We clean, service, and restore proper cooling to your computer for homes and businesses throughout Santa Clarita and the San Fernando Valley. On-site or remote — we stand behind every job.