Hi robsterno1
Thank you very much !
Other questions are :
1. after I installed El Capitan , I find that only one usb port work , the others does not work . I have checked the efi files and the config.plist file . Now I installed the yosemite , the usb ports all works . I want to know how to solve this problem ?
2 . When I lid the laptop , and unlip the laptop , the screen of the laptop keeps black . I tried many ways to solve this problem , but failed . Pls help me. Because I usually use external screen not screen of laptop to work . I want to lid the laptop when I use the external screen .
3. How to lock screen (not log out)by keyboard shortcuts ? (just like in Windows : win key + L key)
Please provide complete details
in your profile/signature
(Profile/Settings link in upper right corner of this site)
Mobo: manufacturer/model + bootloader(Clover/Chameleon/Chimera)
CPU: detailed CPU model + motherboard chipset
Graphics: all graphics devices + laptop internal screen resolution
For example, typical Ivy laptop:
Mobo: HP ProBook 4540s (Clover)
CPU: i5-3320m/HM76
Graphics: HD4000, 1366x768
Use CPU-Z on Windows to find CPU (Core iX-xxx) and motherboard chipset (HMxx), and graphics capabilities. For a laptop, these details are important and affect critical installation procedures.