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My name is David.
If the computer does not boot, and if it runs Windows 10, do the following:
Boot the computer and immediately power off the computer when Windows starts
(when the Windows logo appears). Do this three times and then boot it again
and the Advanced Boot Menu should appear.
Select Advanced options in the menu that appears, then select Troubleshoot >
Advanced Options > Startup Repair. Once Startup Repair is running it will
scan for and fix problems keeping the system from booting. Then once
completed, reboot and test to see if the issue is resolved.