Hello,

Following several test to learning .

I mod on Lenovo T440 (advanced menu and whitelist network).

Advanced menu:
400h: 04 32 0B 48 3C C2 E1 4A BB 16 A7 3F AD DA 47 5F ---- TO ----- 77 8B 1D 82 6D 24 96 4E 8E 10 34 67 D5 6A B1 BA




Whitelist network:

Dell Network Card


The mod is OK but there is still a startup error with 5 beep ?? How to correct this error ,please ??

This guide it's Ok for my problem ??

https://www.insanelymac.com/forum/topic/...eeps-on-lenovo/

And
I try also on T460 but without result ,surely because of the bootguard ?? No Boot , 5 Bip and only black screen