Why wont this computer turn on?
340181
The power button has two wires that lead down to the motherboard and plug onto copper wire-like things called Headers.\nThese are just copper wire stubs sticking up off the motherboard.\nIf it was dropped, the wired could have come off the headers.\nLook inside and see if there are any wires not connected at both ends.\nIf there are, Best to take it in to a service shop.\nThey probably won't charge very much just to find where the power leads plug in at.\nIf you eMail me with a decent photo of your motherboard, and model number, I might be able to help.\nJames_Fergason@Yahoo.com
262543
Check the battery..Go buy a new Battery.. See if it boots up then..If it dosent then it looks like a computer doctor is needed.Could be costly. If its an old one. it might pay you go buy a newer one.
448257
check your power supply and makes sure it is connected correctly, and make sure the power supply isnt a dud
332938
It could be that your fan has burned out.  If you notice the fan does not come on at all anymore, it's probably time to get a new one.  \n\nSide note... if your computer is in a room that tends to get warm, you're going to want to change that fan soon and/or use another fan (small household oscillating type) to cool your CPU unit.  If your system gets too warm, the whole thing will shut down till it has a chance to cool down again.
1049920
unplug it for a few moments then turn it back on works for m e look for another computer
985811
check the power cord to see if there is a break if not then it most likely dead try and take it to computer shop and see what they say you can get a new one if they say it dead
1099343
It might be the battery on the mother board might need to be replaced. Do that first.
1078603
Make a bootable cd rom and see if it boots on that.\n\nYou can even try a non-Windows OS (gasp!)\n\nLastly you could try to flash the Bios
550887
My best guess is a dead hard drive.  Does the computer make it past the Post (power on self test) screen.  Does it attempt to load Windows, does the clicking start with HD access or does it start as soon as you turn the PC on.  Is anything displayed on the screen at all... until the clicking starts.  If your computer makes it past Post then I'm going with my initial gut feeling that your hard drive died on you.\n\nOf course, I've never had a motherboard short out on me so I have no idea what that would sound like... but it could be, I couldn't say.  Once again, this is one of these catch all problems where just about anything mechanical or electronic could be causing the noise.\n\nWell, since nothing works, this is going to be hard to diagnose.  Best guess is still a hard drive but now I'm going to toss in the processor, memory, GPU and well, any other hardware in your system.  Start removing components one by one and see what happens, save for the processor, I've never tried to boot a system without a processor but my guess is nothing will happen.  If that doesn't work, you're right back at square one.  Here's an idea, take your hard drive out, plug it into another computer as a slave and see if it at least works, don't do anything to it, just see if it is recognized, if it is, not the hard drive.  If you can rule out the hard drive you are looking at a dead motherboard and/or processor which will have to be replaced at least.  If the motherboard is fried, you'll have to check the other components to see what is good and what is not.
718475
turn it back on... use the power button and it will "wake up" and turn back on.\n\nIf you are having problems, like it is getting stuck while waking up, turn it on, then hold down the power button until it turns back off again... and then turn on the computer (it will reboot).
63361
If you have used a power suply tester and verified that that power supply in the current computer is OK, then unplug and replug in every connection to that motherboard. Try restarting the PC and see if the PC reboots up. If you have a second power supply then take the other one out and hook that one up. If you still cannot get the PC to start up or at least get the BIOS start up screen there is no sence testing the motherboard because my friend is fried. Consider replacing it.
530057
well i would recomend sending us the system specs what type of pc is it and cpu, ram , HDD and so on then we can tell you. also go to http://www.newegg.com to buy a new power supply
5823
Make sure it is plugged (sounds funny I know but make sure).\n\nNext, make sure that you did not accidently bend any of the pins on the plug when you plugged it into your computer.\n\nIf still nothingit is probably toast :(
984243
It sounds like your video card got jarred loose, or is bad.  Try reseating it, if that doesn't work, you may need a new one.\n\nBy the way, the computer itself comes on, right?
571721
just check the fan on processor is running and it is locked on the proses.bey be prrocesser geting heated up
867880
I would guess the power supply failed.\nIf the hard drive spins up and you can tell it is booting up you may have a bad video card or a bad monitor.
952909
try to restore your BIOS setting to it's default, remove your Computer Case cover, Then remove the Battery On the Mainboard, plug In the cable, then put the battery back, Turn on your computer.