How to Disable RAM onboard Asus Laptops

how disable ram on this mainboard?

 

https://pkbiosfix.com/disable_ram_onboard_asus_ux32v_ux32vd_r2-1_r2-2_r2-4/

 

is this possible please ?
hp dv6 da0at3mb8f0 rev f dis to uma

 

please help me to :
disable ram on bios asus x751ld rev 2.5
this is my or bios

 

Disable_RAM_onboard_Asus_TP500LN_r_2.0

 

Disable_RAM_onboard_Asus_s400ca_rev_2.1

 

Disable_RAM_onboard_Asus_S301LA_r2.0_r2.2

 

Disable_RAM_onboard_Asus_Q302L_TP300LA_r2.0

 

Disable_RAM_onboard_Asus_N551JK

 

Disable_RAM_onboard_Asus_K451L_S451

 

Disable_RAM_onboard_Asus_K50IJ_X5DIJ_r2.1_r2.0_r2.2_r2.3_r2.4_r2.6

 

Disable_onboard_Ram_Asus_X550LD Rev 2.0

 

instruction How to disable on board ram.