![]() Warning: Make sure you do not hold down the “fn” key when resetting the SMC.Ħ. Resetting the SMC means you will also need to reset the date and time (using the Date & Time pane of System Preferences). See Knowledge Base article 303319, “Resetting MacBook and MacBook Pro System Management Controller (SMC)”. ![]() Reboot the computer-hold down the Control and Command keys and press the Power button, or press and hold the Power button for 5 to 10 seconds to shut down the computer, then press the Power button to restart.ĥ. Press F2 (with the fn key pressed and not pressed) to increase the screen brightness setting.Ĥ. Try known-good power outlet, power adapter, and power cord.ģ. Apple suggest:" No display or dim display, but computer appears to operate correctly and has video operating on external display (display is fine after startup, but after a few seconds no display or dim display)Ģ. If it does not, then you are having GPU trouble on your computer. If so, then it is the inverter/backlight circuit of your computer. Try to connect an external display and see if that works. Since you already replaced the LCD with a working one, it is possible that this is caused by a bad inverter. ![]() So this answer is a general answer and hopefully the Mac Guru's can help you out further. I'd like also to say it is not advisable to modify the registry settings without proper knowledge or guidance as it may lead to system instability and other issues.Don, first I must admit that I am not a Mac person. Restart your computer for the changes to take effect. Look for a DWORD value called "FeatureTestControl" and double-click on it to edit its value data.Ĭhange the value from 9240 to 9250 and click OK. Navigate to HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\0001 (Note: the last four digits may vary depending on your hardware configuration). Type "regedit" and press Enter to open the Registry Editor. Press the Windows key + R to open the Run dialog box. This is a more advanced method and requires some technical knowledge, so I would recommend only attempting this if you feel comfortable doing so.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |