Is you HP desktop not powering on? There can be one of several issues with your computer, but there are ways for you to figure out what exactly is wrong with your computer.
Power supply issues are often mistaken for start-up problems. Before you begin troubleshooting, it is important to first isolate the problem and determine its source. Push the power button on the PC and wait for the green light to come on. The green light on the front of the PC indicates that the PC has power. If you see an amber or orange light it means the processor board has failed. You will need to purchase a replacement directly from HP or an HP authorized service center.
After you push the power button, listen for any beeps. If you do not hear anything, it is an indication that your PC is not receiving any electrical power. Refer to your HP user guide to determine the meaning of the beeps. These beeps are known as POST (power on self test) codes, so different beeps have different meanings.
Test the electrical outlet used by the PC. To determine if you have a faulty outlet, plug your PC into an outlet in a different environment. If the outlet is good, continue your troubleshooting.
Remove the case of the computer to determine whether or not you have a faulty power supply. Locate the power supply inside the case. The power supply is the large metal box mounted in your computer that connects with the AC power cord. Push the power button and listen for the noise of the cooling fan. If the fan does not spin then there is no power getting to the PC. You will have to order a new power supply from HP. Make sure the wattage on your replacement equals or exceeds the wattage on the faulty power source before ordering.
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