Which function key need to be press while reboot to ebter in safe mode of windows

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As asked and as and already pointed out for legacy installs, the old function‑key interrupt still exists in older Windows — but modern PCs and Windows versions use a different, more reliable path because many systems boot too fast for a keypress to be detected. Microsoft documents the change (the boot menu is controlled by a bootmenupolicy and, on modern Windows, the classic F8 window is disabled by default). (learn.microsoft.com)

If Windows will start normally, use the supported Advanced Startup flow: from Settings → Recovery → Advanced startup → Restart, or hold Shift while you click Restart. After the reboot choose Troubleshoot → Advanced options → Startup Settings → Restart, then pick the Safe Mode option (numbers or F‑keys are shown). That is the official, supported method for Windows 8/10/11. (support.microsoft.com)

If Windows won’t boot, force the Windows Recovery Environment (WinRE) by interrupting the startup (power‑off during the Windows logo) twice; the third boot should drop you into Automatic Repair / Advanced options where you can reach Startup Settings and select Safe Mode. Keep in mind encrypted drives (BitLocker) can require the recovery key before some recovery actions will proceed. (support.microsoft.com)

If you prefer the old F8 menu you can re‑enable the legacy boot menu from an elevated prompt (use with care — administrative rights required and you may need to suspend BitLocker/Secure Boot first). Example commands (Microsoft documents these BCDEdit options):

bcdedit /set {default} bootmenupolicy legacy
bcdedit /set {current} onetimeadvancedoptions on

After using BCDEdit, reboot and press the function key when the legacy menu appears. Alternatively, use msconfig → Boot → Safe boot to force the next boot into Safe Mode and remember to uncheck it afterward. Follow Microsoft’s warnings before changing boot settings. (learn.microsoft.com)

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F8

Which version of windows OS do u use?

Version doesn't matter. Everything from win 95 and later uses F8 to access the safemode/startup menu.

Member Avatar for Member #1109047

The key for Safe Mode is F8 and F8 is the key used for entering the Safe Mode for Windows 98 and
later versions...

Thank you all.

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