I went out of town this past weekend, i shut it down, when i returned the power was off to the house at some point and the power switch on the computer was blinking. i tried to unplug it and see if it would start but it continues to blink. need help!
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Re: hp desktop won't turn on
It sounds like you may have lost your power supply due to a surge in the line when the power came back on. Here's link to some power supplies, I would also invest in a surge protector power strip, to prevent this from happening in the future.
Make sure you get a power supply with the same or higher wattage then the one in your PC, they are fairly easy to replace four screws on the back of the PC and unplug the connections to the PC components inside.
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Remove the power cord.
Locate the 120V / 240 V ac selector switch. (within 4 inch from the power inlet)
Move it back and forth few time.
Make use it's set to the correct voltage selection.
Reconnect power cord and power up.
This AC selector switch can get shifted and set to different position.
Try this: Go to Control Panel-Display-Screen Saver-Power-Advanced tab and make sure that after the statement "When I press the power button on my computer" choose Shut down. Then turn off your pc with the power button (if it does not work unplug it, then try the button after Windows complete it's boot-up. Let me know how it went.
If you cant see or heard any boot up sounds, fans and especially if you dont see any power or green led lights at all ;
If your power cord is plugged into a power strip or surge protector, power cycle your strip or surge protector by turning off and on.
If power outlet has a wall switch make sure its on
Check that your power cable is securely plug in to both ends
Check that at the back of computer, specifically on the back of the power supply unit that the switch is on "1" position and NOT on the "0" position ( 1 is "ON" , 0 is "OFF" )
Check that the power outlet is not damaged by pluging in another good known device (such as a blowdryer, shaver, lamp, radio, etc, etc) to see if its the power outlet or not.
Can you see power or green led lights and hear the fan on but no display ? If this is the case , check your monitor connection at both ends. If they are secured open up your case and see if you can smell any burnt smell or check that all cards especially video cards are properly seated.
Most likely the power supply has failed. This is the device that the cord plugs into in the back of the computer. They can be purchased for around $20 - $50 depending on where you go. Then you just remove the four screws holding it in, remove all the internal plugins and reconnect the new power supply. Oh and please take a moment to rate this solution as fixya. Thanks! :c)