dear Lost_n_bios
thanks alot for your great work !
tried a few little changes, already had black screen/no post - better to be very careful ( as you mentioned ).
main point (egpu) seems to be not possible so far.
I will try to use my older backup Laptop for egpu project.
do you have expereince with Lenovo L530 Bios ?
Again thanks alot for your great work and professionel help ! 