The anti-virus may have removed or corrupted some system files.
In the Recovery Environment, did you try to uninstall the latest update, and perform a system restore to a date before the problem occurred and also try accessing Safe Mode to delete the graphics drivers.
If so, and if none of the available options in the recovery environment are resolving the problem, you will need to create a bootable Windows 10 USB on another working PC and boot your PC from that, then rather than installing Windows 10, select ‘Repair this Computer’ that will give you access to the Recovery Environment from there
In the Recovery Environment on the USB, try each available option.
Click this link: https://www.microsoft.com/software-download/windows10
to download the Media Creation Tool (Click on Download Tool Now), with that you can create a bootable USB flash drive (min 8GB) using that tool.
Then, Boot your PC from the Installation Media you just created.