Fix slow boot and slow startup on Windows 10/11 -- reduce boot time from minutes to seconds. Disable unnecessary startup programs, fix Windows Fast Startup issues, repair boot configuration. Fix PC taking too long to start, black screen on startup, long loading screen.
windows performance system tool boot optimizer windows-10 speed startup ssd repair fix slow diagnostic windows-11 fast-boot boot-fix slow-boot slow-startup startup-fix
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Updated
Jun 18, 2026