Acer aspire 4750G stuck at loading boot BIOS

[ronald324]

My laptop BIOS is phoenix, if i turn on my laptop, it just stuck at loading boot BIOS with ACER text. i see in the bottom right corner the loading maybe stuck at 75%.

I already tried to flash BIOS using crisis disk in this link :

https://www.bios-mods.com/bios-recovery/...-recovery/

but is not working for me,
if i get in to recovery mode with fn + esc the screen is black but i wait for 15 minutes and turn off the turn on again but nothing changes.

I need solution for my laptop acer aspire 4750G.

Thanks