Quick Answer: Why Won’T My New PC Build Turn On?

What does it mean when a computer won’t post?

The POST (power on self-test) is a set of procedures that a computer runs through each time it is turned on.

It ensures that all of the system’s hardware is working properly before trying to load the operating system.

If the computer does not pass POST, it will not boot..

When I turn on my PC 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. … Make sure it runs to the motherboard and is well connected.

Why won’t my new PC build turn on?

Missing power supply cables If your PC isn’t booting, double check that the main 24-pin ATX cable is plugged into your motherboard. … On most modern PSUs, the four extra pins detach from the main connector. Also be sure that you’ve plugged the appropriate PSU cables to your motherboard’s 4-pin or 8-pin CPU connector.

When I press Power button on laptop nothing happens?

Unplug the laptop from the power adapter and turn on the machine. If it doesn’t turn on, then your battery will need to be replaced. If this doesn’t solve your problem then you may have a faulty power adapter. … If there is, the cord to the adapter may be faulty and needs to be replaced.

Why is my computer not working?

If the computer is acting strange, frozen, or encountering errors and can boot, reboot the computer. Often rebooting the computer can solve many computer issues. If you cannot restart the computer because it is frozen, press and hold down the power button for a few seconds until the computer turns off.

How do I know if my power supply or motherboard is bad?

The AnswerPlug the power supply into the wall.Find the big 24-ish pin connector that connects to the motherboard.Connect the GREEN wire with the adjacent BLACK wire.The power supply’s fan should start up. If it doesn’t then it’s dead.If the fan starts up, then it could be the motherboard that’s dead.