Motherboard Replacement Question

[Sebastian Ramirez]

Good evening everyone,

 

So I want to change the motherboard of my Alienware 18 (the CN-04703X motherboard) for a new one because I'm a bit afraid that the old one won't last too much. The thing is, I managed to change the BIOS display setting to SG mode (I modified the BIOS because I'm going to install a GTX1070 in the future). So when I get the motherboard and change it, will the SG setting stay as is? or will I loose my modification or cause further problems? (Or should I change to default display setting, swap the motherboard and then I can swap it to SG back again?)

 

Please help and thanks, I just want to make sure I don't cause display issues, its an expensive laptop.

 

[Maxware79]

You will need to flash the new motherboard with the modifed BIOS. All that information is stored on the BIOS chip on the board. 

[Sebastian Ramirez]

Sorry, by flashing the motherboard with the modified bios, you mean doing the SG mod again? (Sorry I'm not sure what you mean by flashing)

[Maro97]

On 10/28/2025 at 12:59 AM, Sebastian Ramirez said:

Good evening everyone,

 

So I want to change the motherboard of my Alienware 18 (the CN-04703X motherboard) for a new one because I'm a bit afraid that the old one won't last too much. The thing is, I managed to change the BIOS display setting to SG mode (I modified the BIOS because I'm going to install a GTX1070 in the future). So when I get the motherboard and change it, will the SG setting stay as is? or will I loose my modification or cause further problems? (Or should I change to default display setting, swap the motherboard and then I can swap it to SG back again?)

 

Please help and thanks, I just want to make sure I don't cause display issues, its an expensive laptop.

 

The modification you made in the BIOS on the old motherboard will, of course, be lost if you install a new motherboard. You’ll need to flash the unlocked BIOS again on the new board and then enter the BIOS to reconfigure the settings

[Maro97]

@Maxware79 He is a god father of old Alienware laptops . 

Understand what he says carefully and follow all his instructions so you can achieve the result you want without any problems

[Sebastian Ramirez]

Ok perfect I understand, thx so much

[Maxware79]

On 11/1/2025 at 8:48 AM, Maro97 said:

@Maxware79 He is a god father of old Alienware laptops . 

Understand what he says carefully and follow all his instructions so you can achieve the result you want without any problems

 

I appreciate that but @ssj92 is the real Godfather. He has done things that people thought would be impossible. 

[Maro97]

6 hours ago, Maxware79 said:

 

I appreciate that but @ssj92 is the real Godfather. He has done things that people thought would be impossible. 

you and @ssj92 are the best of the best 🙂