how can i log on on my pc when it will not start

If the PC cannot reach the Windows sign-in screen, run Startup Repair first; if Windows starts normally and only New Outlook will not open, end the Outlook process and reinstall the app if necessary.

If Windows itself will not start

1. Turn on the PC and wait for the Windows or manufacturer logo.
2. Hold the power button until the PC shuts down.
3. Repeat this forced shutdown once.
4. Turn it on a third time. Windows should display Automatic Repair.
5. Select Advanced options. This opens the Windows Recovery Environment (WinRE). ^1^
6. Select Troubleshoot → Advanced options → Startup Repair → Restart.
7. If requested, enter the device’s BitLocker recovery key.

Startup Repair checks for problems such as damaged system files, boot configuration errors, incompatible drivers, and registry errors. It will either attempt a repair or display a report describing what it could not fix. ^2^

If Startup Repair does not work:

• If the problem began immediately after an update, select Troubleshoot → Advanced options → Uninstall updates.
• As a later option, choose Troubleshoot → Reset this PC. Choose the option to keep personal files where available, but understand that resetting can remove applications and settings.
• Reinstallation from recovery or installation media is a last resort because some methods remove everything from the PC. ^3^

If the PC does not display a manufacturer logo, makes unusual sounds, or cannot remain powered on, this may require the PC manufacturer or a repair technician rather than Windows recovery.

If Windows starts but New Outlook does not

1. Right-click Start and select Task Manager.
2. Select Microsoft Outlook, then select End task.
3. Close Task Manager and try opening Outlook again.
4. If Outlook still does not start:
   • Open Start.
   • Find new Outlook for Windows.
   • Expand its options and select Uninstall.
   • Open Microsoft Store, search for Outlook for Windows, and select Get.
   • Open Outlook and follow the prompts to add the email account.

Microsoft documents these steps specifically for New Outlook for Windows. Reinstallation requires Windows 10 version 17763.0 or later. ^4^

Do not use Classic Outlook procedures such as outlook.exe /safe, COM add-in removal, SCANPST, or creating a classic Outlook profile unless the application is actually Classic Outlook. Microsoft states that Classic Outlook troubleshooters do not apply to New Outlook. ^5^

References

1. Windows recovery environment | Microsoft Support
2. Startup Repair | Microsoft Support
3. Recovery options in Windows | Microsoft Support
4. Outlook for Windows not responding, hangs, freezes, or stops working
5. Resolve Outlook for Windows issues with automated troubleshooting tools | Microsoft Support