Symptom:
G400 notebook, fault is power-on, no display, after replacing the motherboard, it is found that wireless can not be turned on, the system is Windows 8 system, the method of installing Windows 7 version power management is invalid, the query BIOS version is already The latest, install Windows 7 system is normal.
Cause Analysis:
Since the Windows 7 system can be used wirelessly, it is determined that this failure should not be a hardware failure, and may be related to the BIOS version.
Solution:
Download the latest BIOS solution on the service website.
1. Open "Control Panel""Network and Internet; 2.
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