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Solve : PC won't come on? |
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Answer» My nephew unplugged my PC and when I plugged it back up it won't come on. I have tried plugging it into different outlets and it still won't come on. All of the other components, monitor etc.. all come on , just not the PC it's self.. The computer is an HP about six years old running Windows XP Home... Plenty of memory etc... When you push the power button there is no indication of power getting to it. The light does not come on and it doesn't make any sound. Just nothing...I haven't taken the cover off and tried anything other than just plugging it into different outlets so maybe a more in depth examination of the situation is needed... I just haven't had the time yet.. Have you ever opened up the computer and looked inside? If not, more than likely there is a TON of dust which needs to be blown out with COMPRESSED air....There could (just could) be a short somewhere Other than that, the next thing I would do if verify that all the cables and stuff inside the computer are properly connected...If you do that and everything looks good, borrow a power supply of equal or greater wattage and see if that corrects the problem....If that doesn't work. then you probably need a new motherboard...but it would probably be better to just buy a whole new computer since most of the components are old anywayThanks so much for all the help. I really like this group.. Like I said before I am a beginner so I don't know a lot about computer. I always tell people to assume I know nothing and explain fully please... I looked at the back of the pC and there is a tiny green light that is blinking so I assume power must be getting to the computer... Also when you say borrow a power supply are you referring to the power cord or something inside the computer ? Sorry I don't know these things... Thanks again, LakenWhen saying to borrow a power supply he means something in the computer. It doesnt sound to me that its something you should be doing yourself Well lets see here....hmmmm Before you do anything you should blow out the inside of the comptuer with a can of compressed air. I have a feeling it has NEVER been done Be sure to hit the area around the CPU very well...(the thing that sits on your motherboard with the FAN on it) In a nut shell, anywhere you see dust, get rid of it. There is a small chance (someone correct me if I'm wrong) that built up dust is causing short and preventing the computer from powering on, so when the computer is clean on the inside, give it a shot and try powering on the computer.. When blowing out the computer, be sure to get the intake vents so air can get inside the computer.. I think most computers have intake vents on the front and they are not easy to see or get to, so you would have to remove the front cover of the computer to get to it..Also, be sure to shoot some air into your current power supply to get the dust out of it (DO NOT open the power supply itself, high voltage is present even if it is unplugged)........AND do this outside because dust will fly everywhere Whether or not this fixes your problem doesn't really matter because you should keep the inside of your computer virtually dust-free. If that doesn't work, then PLAN B: The power supply is a cube-shaped device that sits inside your computer and is directly connected to the power cord that goes into the wall.. Generally it is HELD in place by four screws, in the back of the PC. If you are careful, while the computer is unplugged, you can take the screws out and disconnect all the connectors that lead into the mother board and devices (noting where/how they are connected so you can put it all back together). Once you've got it taken out, put the other power supply (if you can borrow one from another computer OR computer savy person) in and connect it the same way the other one was connected....and see if the computer powers on OR Since you are only troubleshooting at the moment, you could simply disconnect all the connectors of the current power supply from the motherboard, RUN your power cord into a different power supply, connect that power supply to the motherboard the way the other one was connected while leaving it on the table top (not installing it) I would also recommend checking all of the connections that go from the power supply (the cube) to the motherboard (the large silicon board). Sometimes you don't even need to clean it to get it to work, just disconnect each connector and reconnect it- ensuring it clicks back in place. Just be gentle, and practice electrostatic discharge safety procedures in order to avoid frying your computer with built up static electricity from dragging it across a rug. If it turns out to be the connectors, try and clean it to prevent such a thing from happening again. Be sure to follow the instructions on the can of compressed air, as you don't want any of the propellant spraying onto your delicate electronics. The low temperatures could crack and damage something.Others who have had similiar situations and their suggestions. Good luck, truenorth http://www.daniweb.com/forums/thread100769.html http://www.fixya.com/support/t239323-psu_blinking_green_light_no_power http://www.techspot.com/vb/all/windows/t-49521-Computer-wont-power-up-after-disconnecting-power-supply.html http://h30434.www3.hp.com/psg/board/message?board.id=HardwareDPC&thread.id=347 |
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