Help HP G62-b10sp bricked

[Siivet]

Hello there people, I need some help with my hp g62-b10sp, I got a modded bios from this forum some time ago, and yesterday I decided to use the graphic changing option from hybrid to dgpu, now the screen goes black with the caps lock led blinking, sometimes the screen get on and a cmos error 502 appears and it says it will restar but nothing more happens, I cant remember the modded bios I had but i guess it was a mod of this:
sp55430.exe [1/1, 4.52M]
Version:
F.48

Tried to remove the cmos battery , and that didnt work !

Edit: I got my hp drive on my desktop to save my stuff, the hp partion has some bios folders but they are all empty !