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X1 Yoga 4th Gen (Type 20QF, 20QG) Laptop (ThinkPad) FX490 NM-B861 REV 1.0

thanks , display ok but sound not detected . Is there a problem with the bios file? because before the blank sound was detected. Can you help me to send a suitable bios file. Thank You
 
thanks , display ok but sound not detected . Is there a problem with the bios file? because before the blank sound was detected. Can you help me to send a suitable bios file. Thank You
thanks , display ok but sound not detected . Is there a problem with the bios file? because before the blank sound was detected. Can you help me to send a suitable bios file. Thank You
 

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fix.zip
16.6 MB · Views: 2

still the same, can't detect the sound, the sound is a cross, and in the sound driver there is an exclamation mark, please help to fix the appropriate bios file, thanks
 

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