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Use portable tools, avoid power-sensitive tasks, and watch battery life after cleanup.

Quickly spot large files and caches, clear Windows update packages, and inspect download/temp folders when the C drive goes red.

Scan for the biggest directories, delete unused images and packages, and keep critical drivers and docs.

Separate download vs install leftovers and safely clear SoftwareDistribution and DriverStore temp caches.

Cover Temp and log leftovers, selectively clear browser caches, and clean regularly to keep performance steady.

When space is tight, follow this list to check updates, browser/WeChat caches, Downloads, and temp folders.