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    Computer not booting


    Heya guys.

    I hope you can help me with this problem. I recently bough a brand new case for my computer, fitted it and everything and now my computer wont boot, there isnt any beeps sounds. The motherboard lights come on, all the fans come on event the HDD's spin. But nothing happens.

    Could you tell me whats the most likely cause? I'm stumped.
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    First, try removing all non-necessary components. Start with just the power supply, motherboard, and CPU. If nothing, replace power supply.

    Next, add sound card (if possible.)
    Next, add graphics card.
    Next, add Hard drive.
    Next, add optical drives (one at a time.)
    Lastly, add any other devices.

    If any single devices fails it, test and/or replace it. If you get to the end, consider larger power supply.
    Adam TT
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    Most of the time this is due to a loose or backwards connector.

    Doing as AdamPI suggests will probably fix the problem, although I recommend removing all components and then re-adding the necessary ones. Also I would categorize a sound card as "any other devices". Also note that some boards won't boot at all without a graphics card.
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    Reply: Computer not booting


    Dear, Chevron_001, I want to tell you, you can remove the RAM on the board and clean it and place on another slot then try it ,I think pc will be successful start.!!

    Lets enjoy..
    Last edited by hiker; December 27th, 2011 at 02:03 PM.
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    Okay. Status report:

    Pulled out all the non-essential parts, left a skeleton system. Tried running it again and still nothing. Tried all 4 sticks of RAM and both graphics cards and 2 out of 3 HDD's and still no booting. TO me this seems like its either a CPU / Mobo issue. As far as I can tell everything is being powered, lights on the Mobo are lighting up. This is leading me to believe that its the CPU. Does anyone have any further ideas what could be the cause?
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    I'd make sure I got the motherboard manual from the mfg and then double-check all the headers/jumpers and cable/wire connectors. With a new case you may have one of the front-panel connector plugs in wrong.
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    also, make sure you don't have one of the motherboard case standoffs in the wrong place..that it may be grounding out your motherboard.
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    The CPU is almost never the problem, so I would suspect the Motherboard first. Pretty much the only way to damage them is to physically break them, overheat them or if they get power surged.

    The fact that the motherboard lights up only means that it has power, not that its working. Grounding could be an issue, try running it outside of your case. You could also inspect the capacitors for damage, as those are the components that tend to fail spontaneously the most.
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    Okay, round 3.

    I have taken all of your comments and tried everything. I built my computer outside of the case to eliminate the grounding issue, still nothing worked. I did check the manual and placed all the supports were in the right place and to make sure all the I/O jumpers were in the right place. All correct. Still testing on a skeleton system. I assume now its time to buy new parts and hope I have the right one? Unless anyone else has any idea's?

    *edit* I also checked the board for any burn marks or the possibility of the capacitors shorting out. No luck there. *end edit*

    Thanks everyone for all their help I really do appreciate it.

    Steven
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    Power supply. Seriously, replace that. Almost anywhere you buy one will let you take it back. So go buy one, try it out, if no change return it. I had a similar sort of symptoms (power lights came on, etc.) and the PSU was the problem in the end.
    Adam TT
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    Wink


    the easiest way is to carry away some of the computer services computer diagnostics to do and say what's wrong. then buy and replace a part that does not work. because really there is much that can be caused not work ...
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    Yeah I suppose that is one option.

    So far i've replaced the PSU and now waiting on money to test the Motherboard. which since the new PSU isnt helping then i'm guessing thats the piece thats broke.
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    i think you need to check your cable connection properly , because you are saying that
    motherboard lights come on, all the fans come on event the HDD's spin.
    Thanks
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    Yes even I think you should start with power first and then gradually add up other components. Check the functioning of each component individually and then get to know which one is faulty.
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    It looks like your RAM problem. Remove your RAM clean it and place it again. If still not working then check every single component specially you motherboard and processor.
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