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CPU goes to 100% even just after restart
The CPU goes to 100% and the fan spins very fast. This happens from time to time even the laptop just restarted and no program was opened.
If your CPU hits 100% usage after a restart with no apps open, it could be due to background tasks like Windows updates or malware. Check Task Manager to identify the process causing the spike and run a malware scan to rule out security issues.
Some background processes or services may be causing high CPU usage. Windows itself can run various tasks after a reboot that may temporarily spike CPU usage, such as updates or indexing.