i uninstalled qualcomm atheros ar3012 bluetooth 4.0 +hs

You can plug a lamp into the power outlet. This simple step lets you know whether the power outlet is working or not. The MacBook charger comes with a removable AC power cord. Insert the plug into the wall outlet firmly. Make sure you insert the power cord into the charger firmly as well.ĭon’t forget to check the power cord on the charger side. Look out for any fraying or tears in the cable. The USB-C adaptor uses a removable cable. Insert the cable firmly into the adaptor. Get a known-good adaptor from your friends or collages to test if your MacBook will turn on or not. You need to ensure your MacBook receives power from either the MagSafe or USB-C charger. Check if the power cable is undamaged and securely plugged into your Mac and a working electrical outlet. Test it with a lamp or a mobile phone charger if you’re unsure about the outlet.

Use the correct power adapter for your MacBook model to charge the MacBook for about 5 minutes. If possible, try using the original power adapter with your Mac. If the flat battery causes your MacBook Air or MacBook Pro not to turn on, most Macs will power on automatically if you connect a working charger. However, some models of MacBooks require a minimum battery power before the Mac can turn on. Let your charger top up the battery above the minimum level. If you can see a green or orange light on the MagSafe connector, it means both your charger and the SMC in your MacBook are working now. The SMC has successfully communicated with your charger and then turned on the light. You may try another charger if you don’t have a light on the connector.Īfter 5 minutes, press the power button to see if your MacBook can turn on. If your Mac still won’t turn on, or if you don’t have a light on the MagSafe connector, go on to the next step. You may think that your Mac won’t turn on when you see nothing on the screen. But that is not always the case! Your Mac may be ON already only the screen is not working.

I uninstalled qualcomm atheros ar3012 bluetooth 4.0 +hs