How to fix fans running at full, no battery, and no keyboard backlight on a Mac

Hold down the Left Shift+Control+Option+Power button for fifteen seconds, and then release them all. Next, wait for five seconds and then tap the Power button. Your problems should be fixed. If you have trouble turning the MacBook on, remove the power adapter and wait for 5 seconds.

1. Why won't my Mac keyboard light up?
2. How do you reset the fan on a MacBook Pro?
3. How do you fix an unresponsive keyboard on a Mac?
4. What does no battery available on a Mac mean?
5. How do I turn my keyboard backlight on?
6. Why is my backlit keyboard not working?
7. How do I know if SMC is reset?
8. Is it bad to reset SMC on Mac?
9. What does a PRAM reset do?
10. How do I unfreeze my Mac keyboard?
11. How do I fix unresponsive keyboard keys?
12. How do I fix an unresponsive touchpad?

Why won't my Mac keyboard light up?

Choose Apple menu > System Preferences, click Keyboard, then click Keyboard. Select “Adjust keyboard brightness in low light.”

How do you reset the fan on a MacBook Pro?

Press Shift-Control-Option on the left side of the built-in keyboard, then press the power button at the same time. Hold these keys and the power button for 10 seconds. If you have a MacBook Pro with Touch ID, the Touch ID button is also the power button. Release all keys.

How do you fix an unresponsive keyboard on a Mac?

Hold down Shift+Control+Option and the Power button at the same time. Release the keys and look to see if the MagSafe adapter briefly changes color. If it does, the SMC reset has worked.

What does no battery available on a Mac mean?

You probably knocked the battery connector out. ... Do steps 1 and 2 to open your computer up, and then make sure the battery connector in Step 3 is 100% plugged in. If it's fully plugged in and it's still not working, the battery itself is probably shot.

How do I turn my keyboard backlight on?

If your notebook computer has a backlit keyboard, press the F5 or F4 (some models) key on the keyboard to turn the light on or off. It might be necessary to press the fn (function) key at the same time. If the backlight icon is not on the F5 key, look for the backlit keyboard key on the row of function keys.

Why is my backlit keyboard not working?

Make sure the Keyboard backlit option is enabled in the BIOS. ... Click Keyboard Illumination. Note: If Keyboard Illumination is not an option, your computer does not have a backlit keyboard. Depending on the version of the BIOS on your computer, you may have different options.

How do I know if SMC is reset?

4 Answers

1. Charging indicator is orange light when machine powered off.
2. Keep pressing Shift + Option + Control + Power for 10 seconds and indicator is still orange.
3. Indicator turns to green when release all keystrokes and keeps almost 1 second.
4. Light turns to orange then.

Is it bad to reset SMC on Mac?

You could try resetting the SMC, or System Management Controller, as a last resort. The SMC manages low level settings, like thermal and battery management. It's rare, but problems with the SMC can effect performance, and also cause bugs like fans that run constantly even when CPU usage isn't high.

What does a PRAM reset do?

Stands for "Parameter Random Access Memory," and is pronounced "P-ram." PRAM is a type of memory found in Macintosh computers that stores system settings. Once your hear the startup chime a second time, the PRAM has been reset and you can release the keys. ...

How do I unfreeze my Mac keyboard?

Fortunately, there are steps to take to fix the problem.

1. Press "Command," then "Escape" and "Option" at the same time on the keyboard. ...
2. Click the name of the application that has frozen from the list. ...
3. Press and hold the power button on the computer or keyboard until the computer turns off.

How do I fix unresponsive keyboard keys?

The simplest fix is to carefully turn the keyboard or laptop upside down and gently shake it. Usually, anything beneath the keys or inside the keyboard will shake out of the device, freeing up the keys for effective functioning once again.

How do I fix an unresponsive touchpad?

Press the Windows key , type touchpad, and select the Touchpad settings option in the search results. Or, press Windows key + I to open Settings, then click Devices, Touchpad. In the Touchpad window, scroll down to the Reset your touchpad section and click the Reset button.