If you feel brave, open up the case (assuming no warranties etc, if it has a warranty sticker on it, and you know the warranty is valid, whatever you do- dont open the case, take it to them to fix!) and double check all power leads etc are plugged in correctly. The power box is the silver box, usually at the top left hand corner of your computer. Follow all the cables and make sure everythings plugged in. Usually if something is loose, you get some mad beeping, but some manufacturers turn the beeps off (Why, I dont know!) Check that there are no loose cables and everythings in nice and snug, then try booting it up again. Did anything happen between it working and it not? say, a pop or some crackling? or its been moved? Do you get any visual output at all?
Sorry If I can't be any more helpful at this stage, I have had this problem a few times with some computers, and its either somethings loose, or the motherboard has gone! J
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Sounds like a bad motherboard. It's getting power and turning on the fans and everything, except booting it up. Yeah, sure sounds like a bad MB. How old is the pc? You have to be careful with Emachines. They are built cheap and break often.
the sound you are hearing or heard could have been power surging through a powersupply unit that just blew.. hopfully it did not effect any of the other hardware..to trouble shoot this you can do one of two things..1 disconnect the 20/24 pin powerconnector from the motherboard 2 disconnect the cpu power connector 3 disconnect the 6pin power connector from the graphics card if there is one some machines have onboard video chipsets if thats the case then no worries 4 disconnect the Harddrive power 5 jump the power supply to see if you get any power from it any questions on that go to youtube and type in how to jump a power supply... or option 2 is buy a new power supply make sure its 80plus certified and replace it...i know its a lot of work but i hope this has helped you
check the fans on inside of the computer. they may be all gummed up with dust and lint. clean carefully and try and turn it on again. also watch the fans and see if you can tell where the bad sound is coming from, if the CPU fan is clogged up the CPU will over heat as its turning on and shut down.. if the raunchy sound is coming out of the power supply then that may be bad. sounds as if it might be.
look on bios to see if detects the hard drive ...if does not boot to windows...the hard disk has no reason to go on ....and the issues could be many ....check the Ram memory if do not appear anything on screen at all ...and just runs the coolers and clicks without boot at all...in this case its the Ram memory ...so check it ...get it out ..put it back ...and remove the bios battery to force it see them again .....if it is booting until the operating system should appear ...and after that nothing ...reinstall ... Also .....if there is anything written on the screen ..read carefully ..usually it will say whats wrong ...and advise in same issues..like replace hdd ...or files missing ...or blue screen error from memory issues..
Lack of video signal is usually 1 of 3 things, Power supply (PSU), Video card or Motherboard (mobo). Situation #1: If you get a blank screen and no sounds or movement it either indicates that the power supply unit (PSU) has failed or something on the motherboard has failed, preventing normal startup. Situation #1A: You might get some power lights coming on and some fans spinning but the video output does not happen, usually indicates that motherboard is going out or has gone out. Occasionally it will be due to a weak (damaged) PSU. Situation #2: If you get normal sounds (you can hear windows starting up) and lights but nothing on the screen then it indicates a failed or loose video card. Always try a different power outlet that you know is working. (Eliminate the easy stuff first!) If it is out of warranty, try opening up the case, with the power off, of course. If you have Sit #2 and have a video card that you can reseat (take out and then put back in) try that. If it is onboard video then you may have to buy a video card for it. Also take this time to inspect the capacitors on the motherboard (they look like tiny soda cans) and check for tops that are bulging, swelling or leaking anything. Capacitors should be perfectly flat on top. If you find these then your motherboard is bad (well technically the capacitors on your motherboard are bad). The bad caps will need replacing to fix (not a job for an amateur). If it passes the visual inspection then it may just be your power supply is weak or bad. Notice that a bad PSU does not mean you are getting no power, just not enough to start and run the computer. A few years ago a company stole the recipe for making capacitors and started making their own capacitors at really cheap prices. The stolen "recipe" was not complete and not correct so these caps started failing after about 2-3 years of use. Emachines, DELL and Gateway were the computer companies most affected by the bad capacitor issues, although any of the big companies could have the same problem. These bad caps also affected power supply makers. Do you hear anything during startup, beeps, fans or drives spinning, lights on the front or back of computer flashing or lit up? Do you hear the Windows starting sound? Let us know more then we can troubleshoot better.
Bottom line: Either your power supply or (hopefully not) the mother board has gone bad.
Replace power supply (remove old one), take to local independent computer shop, ask them for new unit. Should be around $50.00. - no more. After reinstall, if still no fans, boot, etc. Replace motherboard or buy a new machine. MB's installed probably will run you around $250.00-ish.
Yes, it may be that the +5v supply from the PSU is faulty, as the PS/2 ports run on 5v and USB runs on 9-12v. Replace the PSU with another of the same form factor and same power rating or better (>=230W). They come at ~£30, so not too expensive. For a little more. Try this: http://www.quietpc.com/gb-en-gbp/products/psus-300-500/x-red-psus