Press power button multiple times to on
Hi, i have a macbook pro 13” Late 2011, to on the power button has to be pressed multiple times. If pressed once only, the Macbook will switch on without chime and display
I have tried SMC and NVRAM reset, disconnecting the keyboard and switching the macbook on with the pins on the motherboard, the same thing happens
Does anyone have any idea how to fix this problem?
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I would try to run the onboard diagnostics to see if an error pops. Restart your system and press the D key. Did you get any errors. Apple messed up the systems firmware so its possible your system won't run the diagnostics.
Reference: Mac startup key combinations
In addition your battery is likely in trouble given your systems age. Let’s get a better view of things, install this gem of an app! CoconutBattery take a snapshot of the apps main window and post it here for us to see 在已经存在的问题里加入图片
由 Dan 完成的