Practice mode · free · unlimited · not certifiable
Windows System and Troubleshooting
Unscored tasks with hints and instant feedback. Practice results never become credentials.
Short lesson
Windows keyboard essentials · 6 min
Win+E Explorer · Win+V clipboard history · Win+←/→ snap · Win+Ctrl+D new desktop · Win+Tab Task View · Ctrl+Shift+Esc Task Manager.
L1Turn on dark mode and night lightossim
Open Settings and set the app mode to Dark and turn Night light on.
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Which Windows feature encrypts the whole disk of a lost laptop?
Sign up to practiseL3Diagnose a slow PCossim
The laptop is slow. In Task Manager end the runaway process using most CPU (not a system process), and disable the two high-impact startup apps that the user does not need at login (keep the security agent and OneDrive).
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Where do you look first to find why a service crashed overnight?
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After a bad update the PC fails to boot repeatedly. What is the best recovery path?
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