That s it the entries got deleted. Click on yes if the comment answers your question.
Use the novo button.
Boot manager boot option menu empty. All boot options are tried. Then navigate to the boot menu option by pressing the arrow keys. How to permanently delete chromium windows 10 and remove uninstall chromium.
When i press f2 to go into bios both boot menu and app menu are empty and can t change any settings. Officially windows boot manager bootmgr is a small piece of software called a boot manager. For instance if you check the box beside safe boot you could chose any of the boot options available beneath it.
I think there is a bigger issue with the machine probably the battery is dying loosing the efi boot information. Get to know what boot manager is. You could also set boot manager to no gui boot.
Shut down the device. You can select which operating system you would like the windows to boot in the boot menu. Then keep pressing the novo button on your computer to reach the novo button menu.
This is useful if you are testing whether the boot problem is caused by gui. The boot options in the f12 boot menu are populated dynamically based on the detected devices and their contents. Post that connect the usb drive and select the 1st boot priority as usb then save the changes and exit.
If you are looking to install different operating system then go to bios disable secure boot and go to boot then change boot mode from uefi to legacy. If you would like to enter lenovo boot menu with the novo button you can follow the steps below. Still boot option menu empty.
Everything was fine until the machine was brought down for maintenance for 20 mins and after that it failed to boot it forgot the boot info. The big question is why. Msconfig provides other boot troubleshooting options.
Bootmgr is used to start your windows 10 windows 8 windows 7 or windows vista operating system startup. Press f4 key to recover with factory image using recovery or any other keys for next boot loop item f4 doesn t go into recovery upgraded to windows 10 about a year ago. Refer to the previous image.
If you were to go back into your bios disable secure boot and enable legacy booting then check the f12 menu while your flash drive was connected you d see it listed twice once under legacy boot options and once under uefi boot options possibly with slightly different names.