7 Things to Try If Your Computer Won't Turn On

You take a seat in front of your computer, press the power button like you have done countless times before, and... nothing occurs. It's possible that the computer won't turn on at all, that it will power up but then immediately switch itself off, or that all you'll see is a blue screen.

There does not appear to be anything obviously wrong, so why won't the computer just begin operating? The following is a list of steps that can be taken to troubleshoot the issue.

Restart PC:

Keep your finger on the power button as the computer powers down.

To turn on the computer, press the button labelled "Power."

Perform the procedure three to five more times, and then check to see if your computer turns on.

If your computer is not turning on at all—neither the fans nor the lights are blinking, and there is nothing visible on the screen—you most likely have a problem with the power supply. Give it more power.

Instead of using a power strip or a battery backup that might not be working properly, unplug your computer and plug it directly into a wall outlet that you already know is operational. Make sure the power switch on the back of your power supply is switched on, and if the outlet is connected to a light switch, make sure that switch is also turned on. If the outlet is connected to a light switch, make sure that switch is also turned on.

Make sure that your charger is plugged in correctly and that it is connected to the appropriate port on your laptop. If your laptop charges through USB-C, only some of the USB ports on your laptop may really give electricity.

Even if the fans and lights turn on during boot, a faulty power supply can frequently be the source of start-up issues. If you are unable to fix the issue by following the procedures outlined in this tutorial, it is possible that you will need to replace your power supply.

Make sure that your power connection is secure:

It's possible that there's a problem with your display if you can hear your computer starting up but don't see anything on your monitor. Check that your monitor is turned on, that it is plugged in, and that it is receiving electricity.

The next step is to ensure that the cord that links your computer to the display is properly fastened, that it is not broken, and that it is plugged into the appropriate input.

If it doesn't work, you can try connecting your computer to a new display, such as a separate monitor or a TV; it's possible that the problem is with the monitor you're currently using.

Decipher the code of the beeps:

At boot up, the mother boards of some computers will produce a series of beeps. The power supply may be experiencing a critical problem if the sound is a long, continuous tone as opposed to a single beep, which may indicate that everything is operating normally.

There isn't just one set of codes that everyone uses, although the beeps might sometimes sound like Morse Code, complete with long and short tones. Find out what the issue is pointing to by consulting the computer's user guide, looking it up on the website, or calling the technical support service.

Beep codes are not supported by all motherboards, which makes it unlikely that this choice will be a viable alternative.

Unplug Any USB Devices That Are Not Necessary:

If you are trying to troubleshoot a problem, it is in your best interest to get rid of any and all factors that could be contributing to the failure.

Concentrate on the aspect that has the most likely root cause. If you have reached this point and your issue is still not resolved, you will need to disconnect all of your peripheral devices and attempt to start the computer using only the keyboard and mouse.

In extreme circumstances, you should begin troubleshooting without even a keyboard and a mouse to check that none of the USB devices are causing a conflict with one another.

It's possible that the ports are to blame every once in a while. During the process of booting, it is helpful to make sure that none of the ports are connected to anything.

Failure of the motherboard:

If the connections to the power supply appear to be fine but the computer still will not switch on, the problem may lie with the motherboard. First, open the casing of the computer and perform a visual inspection of the motherboard. Examine the capacitors to see if any of them have bulged or blown.

In the event that you performed soldering work on your motherboard not too long ago, it is possible that some of the solders connected two or more contact points when they shouldn't have. Because of these faulty connections, the computer might not be able to power on or boot up.

In addition to these aforementioned causes, the following are also possible causes of motherboard failure:

The circuit board had a crack in it:

pins or prongs for an integrated circuit that have broken.

Integrated circuit destroyed by melting due to overheating.

Even though you can try replacing a bulged or blown capacitor, the motherboard most certainly needs to be replaced because of the problems described above.

Malicious malware used in the attack:

Malicious software is an umbrella term that refers to computer threats such as viruses, trojans, worms, and rootkits. These are the undesirables that should be kept away from your computer.

A word of caution:

If it turns out that malicious software has caused damage to your operating system, it is typically very challenging to make the necessary repairs and get the machine to boot up again. It's not impossible, just tough.

These days, malicious software is so unbelievably advanced that even good proprietary anti-virus software is unable to deal with it.

It is likely that malicious software will be found and repairs will be made if you scan a hard drive that will not boot using a rescue disc that is provided by the makers of anti-virus software.

When dealing with outdated technology that may be on the verge of needing an upgrade or replacement anyway, speeding up a slow PC can be a chore. This is especially true when dealing with older hardware.

Sometimes all that's required to make a system run noticeably better is a clean installation of the operating system or an update to the drivers. In other circumstances, an update or a comprehensive replacement is needed.