How can I improve Windows 11 startup performance?

Start with the least disruptive checks, then isolate whether a startup app or service is causing the delay.

1. Review startup apps again and focus on high-impact items. In Windows, startup apps are categorized by impact:
   • High impact: more than 1 second of CPU time or more than 3 MB of disk I/O at startup
   • Medium impact: 300 ms to 1000 ms of CPU time or 300 KB to 3 MB of disk I/O
   • Low impact: less than 300 ms of CPU time and less than 300 KB of disk I/O
   Prioritize disabling nonessential High impact items first. Startup apps and other boot-time processes can consume CPU and disk resources, which can delay app launches and make the device feel unresponsive.
2. Use a clean boot to determine whether a service or startup app is responsible. This is the most direct diagnostic path.
   • Sign in as an administrator.
   • Open Search, type msconfig, and open System Configuration.
   • On the Services tab, select Hide all Microsoft services, then select Disable all.
   • Select Apply.
   • On the Startup tab, select Open Task Manager.
   • In Startup apps, disable each enabled startup item.
   • Close Task Manager.
   • Back in System Configuration, on the Startup tab, select OK.
   • Restart the PC.
   After restart, test startup performance. Warning: the PC might temporarily lose some functionality while in a clean boot environment.
3. Isolate the exact cause. If startup improves in clean boot, re-enable items gradually until the slowdown returns.
   • If the problem returns after enabling one startup item, that item is the cause.
   • If no startup item causes it, the issue might be related to a Microsoft service, and recovery options may be needed.
4. Restore normal startup after testing. When finished troubleshooting:
   • Open Search and type msconfig.
   • Open System Configuration.
   • On the General tab, select Normal Startup.
   • On the Services tab, clear Hide all Microsoft services, select Enable all, then Apply.
   • On the Startup tab, open Task Manager and re-enable the startup programs that were disabled.
   • Restart the PC.
5. Use Safe Mode if the cause is still unclear. Safe Mode starts Windows with only essential files and drivers. If the slowdown does not occur there, default settings, basic drivers, and standard services are less likely to be the cause. To access it:
   • Enter the Windows Recovery Environment.
   • Select Troubleshoot > Advanced options > Startup Settings > Restart.
   • After reboot, choose Enable Safe Mode or Safe Mode with Networking.
6. What to check first Based on the available guidance, the first areas to check are:
   • Nonessential startup apps, especially High impact ones
   • Third-party services loaded at boot
   • Antivirus activity

A practical rule is to disable only nonessential third-party startup items first, then test. Avoid disabling Microsoft services unless doing a controlled clean boot for troubleshooting.

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