Computer doesnt turn on

I have a problem, my computer was running just fine the other day when it suddenly shut down, I tried restarting it but it suddenly shuts down again after 5 minutes when windows load. I had to leave so I just shut it down but when I came back and tried to turn it on again nothing happens. I tried checking all the cables and nothings different but now when I switch it on the hardware lights up once and the computer doesnt even start up anymore. Which part of the pc is the problem?
wired_lainAsked:
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jhanceCommented:
Generally one of two things:

1) Bad POWER SUPPLY.  This is relatively easy to change and also not so expensive provided you have a standard ATX style case and power supply.  Get a replacement and try it.  If you have another system you can "borrow" the supply out of to test, you can avoid buying a new one until you're sure this is the problem.

2) Bad motherboard.  Harder and more expensive to replace.  Unless you're experienced (or have a friend who is) you should probably take it to a qualified shop.

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haossCommented:
try disconnect power cable for 10 sec.
and then try again.
radomirthegreatCommented:
Maybe your heatsink and fan are going nuts?

I agree with the two experts above, so I have no input of my own other than that crazy thing.

Thank you,
Radomir Jordanovic
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asurada2003Commented:
What OS are u using??
U OS maybe corrupted. Try to run a scan to fix it.
shaharidzalCommented:
Look at the motherboard capasitor. It's a huge capasitor normally located around the processor socket. There will be a number of them, same size and brand. Look carefully at the top of the capasitor. The head (top) with a cross mark should be flat. If you find the head rounded, then the capasitor has blown up. Yes, even with a blown capasitor, you may still bootup the PC. It will hang, freeze and after lots of On-an-Off, it will die........slowly.
If this is the case, then you will need a new motherboard, if still under warranty, you may try to change it. Bye.
wired_lainAuthor Commented:
i'll check the motherboard but i dont remember seeing anything rounded. the pc kinda died down in a span of less than a day.

I checked the power supply and from the back if u peek at it there seems to be a yellowish melted substance and one green transistor looks half burned could this be it? i m running windows 2000 but at the moment the pc doesnt turn on anymore so i cant run anything.
asurada2003Commented:
Since u found there some burned ic from the power supply, it will be better for you to change one and try it from there.
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