Need Help Lenovo ThinkPad T480s ET481 NM-B471 Rev 1 Bios Bin

Laptop: ThinkPad T480s
MB: Et481 NM-B471 Rev 1.0
Type: 20L7-002HUS
S/N: PC-16DWDA 19/06
Bios: WINBAND 25Q12BJVSQ


When the power is turned on, the LED light bliks twice and turns on, with no display.
I flashed my original BIOS with different bios using CH341A and file come from this forum, it boot up led light stay but no display, can someone help me, pls!

Old Bios:
No display re-Flash bios: ...