You tried legacy BIOS option in rEFInd or RefindPlus, right? Did it get you to the screen with the boot icons?
In regular EFI mode can you get to the boot loader menu by hitting Spacebar several times? If so, can you try disabling the following: X2APIC, local APIC, IO-APIC (one by one, and all together). If nothing helps try with all the “Disable …” options selected.