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I'm not the first technician to try to fix it, it´s come me with a bad BIOS and now have the correct file. But the brightness glitch persists. I just checked the Led_vcc_inv and it gives 19V, it seems correct. For the backlight is there any enable signal that I should look at?

The same problem, the scren´s not brightness.... I think it isn´t a software problem. What should I check at the hardware level? The laptop enters windows 10 perfectly but does not show brightness

Hi again, this is my motherboard, with i7 6th and GPU 920MX, could you provide me a BIOS with a nice screen's brightness?

Hello, whit the BIOS original and whit the clear BIOS the laptop don't do anything, but whit BIOS x556uv i7 7th, it turns on but no have backligth, my laptop is i7 6th and GPU 920MX. What else can I do?

Please clear this Bios