Unable to Select an UEFI file as trusted for executing - no drives shown

After installing Lubuntu, I got the No bootable device error, and after searching the net for a solution, tried to set the Select an UEFI file as trusted for executing option as instructed, but it does not show me any drives. The Information screen in the bios setup shows me HDD0, but the Security screen that’s supposed to let me select the efi file shows nothing, unless I insert the USB. I set the supervisor password after installation, and I thought this may be a reason, and installed it all over again. But it’s still showing me nothing. I am sure the installation was done on the hard disk because all previous boot options are gone (as I wanted).

What can be the problem? P.S. I am new to Linux.

Edit:

I have tried turning off secure boot, but it did not help.

I have checked and there is one partition with file system lvm2 pv with flags boot and lvm.

It’s an Acer Aspire E 15 (E5-575-50RM) that came with Linpus and had no GUI. I have installed lubuntu-17.10.1-desktop-amd64.

I did not use any software to create the USB since my Windows XP is damaged and files are missing or corrupted. I used EaseUS Partition Master to format the USB as FAT32 and then copied the extracted ISO files to it, then marked the single partition as active.