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Dell Latitude E6420 please help me fix DSDT and SSDT


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Dell Latitude E6420 


CPU: ACPI\GenuineIntel_-_Intel64_Family_6_Model_42_-________Intel®_Core_i7-2620M_CPU_@_2.70GHz


touch Screen: HID\VID_0EEF&PID_7356&REV_1002&Col03


Network: Intel® 82579LM Gigabit Network Connection


HardDisk: LITEON IT LCS-256L9S-11 2.5 7mm 256GB


Graphics Card: NVIDIA NVS 4200M


Sound Card: VEN_111D&DEV_76E7&SUBSYS_10280493&REV_1001\4&11CF0C5B&0&0001 High Definition Audio 设备

I want use NVIDIA NVS 4200M。
in Mavericks, my 4200M is work,but hdmi and vga not work.
In need of repair
To solve the shutdown is not cut off
The battery does not display properly
CPU is not the frequency
VGA and HDMI not work
brightness control
thanks very much



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