When I press the power button nothing happens?
If you’re still getting absolutely nothing when you press the power button, look to see if your motherboard has any idle indicator lights to confirm that the motherboard is definitely receiving power. If not, then you might need a new power supply. If you do need to buy a new power supply, we’d recommend these.
How do you reset the SMC on a 2008 MacBook?
The Reset Process
- Shut down the computer.
- On the left side of the keyboard, press and hold the Shift, Control, and Option keys while simultaneously holding the power button.
- After 10 seconds, release all of the keys.
- Turn on your MacBook.
How do you reset the battery on a 2008 MacBook Pro?
To reset the system management controller on the new MacBooks, turn off the computer, unplug it, and then open the hatch and remove the battery. When this is done press and hold the power button for 5-10 seconds, and then plug everything back in and start it up again.
How do you turn on a 2008 MacBook Pro?
Shift+Control+Option keys at the left side of the keyboard and the Power button, and hold them all down. Release all four buttons at the same time and then press the power button to turn the Mac on.
What causes a computer not to boot up?
Common boot up issues are caused by the following: software that was installed incorrectly, driver corruption, an update that failed, abrupt power outage and the system did not shut down properly. Let’s not forget registry corruption or virus’ / malware infections that can completely mess up a computer’s boot sequence.
Why does the SMC need to be reset?
Repeatedly needing to reset the SMC indicates a hardware failure. Apple generally replaces entire components – so you’d get a new logic board / GPU / processor board and then that failing board would get analyzed / repaired as appropriate.
Why won’t my MacBook turn on or charge?
Press and hold the power button on your Mac for at least 10 seconds, then release. If your Mac is turned on, this forces it to turn off. If you see no change on your Mac, press and release the power button normally. If your Mac still doesn’t turn on, please contact Apple Support.
How do you reset SMC?
Resetting the System Management Controller (SMC)
- Shut down the computer.
- Disconnect the MagSafe power adapter from the computer, if it’s connected.
- Remove the battery.
- Press and hold the power button for 5 seconds.
- Release the power button.
- Reconnect the battery and MagSafe power adapter.
How do you charge a 2008 MacBook Pro?
Step 1: Plug In the 85W MagSafe Power Adapter to provide power to the MacBook Pro and charge the battery. Make sure the AC plug is fully inserted into the power adapter and the electrical prongs on your AC plug are in their completely extended position.
What causes power supply failure?
Many and probably most power-supply failures are easily preventable. They are most frequently the result of overstressing the supply with heat (either ambient or self-generated), transients or overloading. If you’re a power-supply designer, many of these causes may be obvious to you.
What happens when I press the power button?
When I press the power button, nothing happens. No Power/No POST. 1. First be sure the External Power Supply is connected to both the PC and the electrical outlet. 2. Unplug the power supply from the electrical outlet, followed by the DC connection from the back of the PC.
Why is my laptop not working when I press the power button?
If so, make sure the adapter is plugged into an outlet and that outlet has power. If this solves your problem, your battery may either be faulty or not charged. Try letting your battery recharge for a few hours then power down the machine. Unplug the laptop from the power adapter and turn on the machine.
Why is the power button on my MacBook Pro not working?
Question:Q: Question:Q:MacBook Pro won’t respond to power button Earlier today when I was reading Lifehacker, my MBP just shut down. I also noticed that my power cord also doesn’t work. When it shut off it was at 99% full.
When do I press the power button on my HP laptop?
This HP model was released in 2012. Upgrades include a anti-glare 15.6″ screen and a finger print reader. When I press the power button, nothing happens. When I press my power button, nothing happens. How can I fix this?