What should you check first if a computer will not start and the fan in the power supply will not turn on?

What should you check first if a computer will not start and the fan in the power supply will not turn on?

Terms in this set (15) Never, because the power supply has capacitors that hold electrical charges that may harm the technician. What should you check first if a computer will not start and the fan in the power supply will not turn? He needs to plug in the P4 connector to power the processor.

What is the first thing you should check if the computer will not start?

Simple solutions to common problems

• Solution 1: If your computer does not start, begin by checking the power cord to confirm that it is plugged securely into the back of the computer case and the power outlet.
• Solution 2: If it is plugged into an outlet, make sure it is a working outlet.

What is the first thing you should do if your computer won’t boot up?

How to troubleshoot your Windows PC when it won’t turn on

1. Try a different power source.
2. Try a different power cable.
3. Let the battery charge.
4. Decrypt the beep codes.
5. Check your display.
6. Check your BIOS or UEFI settings.
7. Try Safe Mode.
8. Disconnect everything non-essential.

How do you diagnose a computer that won’t start?

If your computer isn’t turning on at all—no fans are running, no lights are blinking, and nothing appears on screen—you probably have a power issue. Unplug your computer and plug it directly into a wall outlet you know is working, rather than a power strip or battery backup that may be failing.

Why won’t my computer turn on but has power?

If your PC won’t turn on but motherboard light is on, a potential culprit is the power button on the case itself or the wires connecting that button to the motherboard. Using this power button will turn on the system just as a properly wired power button would. If this works, you’ll know the issue is your case.

How do you diagnose a power supply problem?

Symptoms of a failing computer power supply

1. Random computer crashes.
2. Random blue screen crashes.
3. Extra noise coming from the PC case.
4. Recurring failure of PC components.
5. PC won’t start but your case fans spin.

How do you fix a computer that turns on but no display?

Try these fixes:

1. Check if your monitor is turned on.
2. Reconnect your monitor to your computer.
3. Disconnect your peripherals.
4. Reinstall your RAM.
5. Reset your BIOS settings to default.
6. Bonus tip: Update your device drivers.

Why is my power supply not working?

Most power supply models have a light on back of the unit that glows when it’s powered on. If it doesn’t light, try a different power cable and a different socket to eliminate those items as the source of the problem. Check the connection for each PSU cable running to the computer hardware component.

What would cause a computer to not turn on?

Why won’t my computer turn on?

• I’m not sure if my computer is turning on.
• Power cord not connected properly.
• Power strip or outlet.
• Bad power cable.
• Power supply switch.
• Incorrect power supply.
• Third-party hardware.
• Bad power supply, button, power board, or inverter.

What can cause a power supply to fail?

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.

Why is my computer fan not turning on?

If your computer starts up without any problems, it is likely an issue with your battery and will need to be replaced. If your computer’s fan doesn’t start when your power supply is turned on, it could mean that your power supply needs to be replaced.

How to know if my power supply is bad on my computer?

1 Listen for case fans, and mechanical hard drives. You should hear these devices spinning. 2 Check the connection for each PSU cable running to the computer hardware component. 3 Look inside the case for the motherboard light. Usually flashing lights on a motherboard indicate a faulty or misconnected power supply.

Why does my new computer have no power?

The case fans turn on, the phase lights on the mobo turn on, but the CPU fan doesn’t turn on and it won’t post. I went looking in other forums and I found this: http://www.eggxpert.com/forums/thread/263404.aspx and http://www.eggxpert.com/forums/279089/ShowThread.aspx#279089 Anybody know where I can find such a power supply unit?

What to do if your computer won’t turn on?

The key is to figure out what part is damaged and replace it. If there’s no fan sound and no pilot lights come on when you switch on the computer, it may not be getting power. The problem can be with the socket, the power brick or the power cable. Plug a light into the socket to make sure there is power.