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How can my computer case stop my computer from starting up?

  • I have run into a problem while upgrading my computer hardware and its a complete mystery to me, basically i bought a new motherboard, power supply and a new case, i pluged in everyting, tried to start it up fans spun and the drives seemed to power up but no picture or any sign the computer has fully started up. so to try and find out what was wrong i tried using 2 other power supply's i had spare, same thing happend with them, so then i treid my graphics card in another computer, that worked fine so not that so i thought the mobo was faulty so i sent it back to were i bought it, but they sent it back to me saying it was fine. so then i did what i should have done before sending the mobo back which was to put the new motherboard into my old case, and it worked fine picture came up and the computer booted up. so i dont have clue how but my new case is in some way stoping the computer from starting up. if anyone can help me here i would be very gratefull because its baffeld me

  • Answer:

    I doubt very much that it's a case problem. But anything is possible. Try it again with NOTHING from the case plugged into the motherboard. No front panel cables, no case fans... The only connections you should make are the two power connections from power supply to motherboard. Plus any power connection for video card and disk drives. Now use a flat blade screw-driver and carefully short (momentarily) the two pins on the motherboard where the case power switch would have plugged into. If this works, try connecting the front panel power switch to the motherboard, and try turning the system on normally. If the motherboard doesn't boot up and work correctly using the screwdriver trick, there is a problem with how the motherboard is installed in the case. Check for extra standoffs, or MISSING standoffs also.

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Standoffs buddy! You know the gold looking things that come with the case, you screw them into the case first then you place the motherboard on top of the standoffs so they line up with the screw holes on the board and then you screw the motherboard screws into the standoffs. That's the only reason I can think of anyway, you're not the first one to make that mistake ;) (assuming this is actually why lol).

Apparently you have left an old standoff from the previous motherboard and is toughing and shorting the new one.

the only way that the stand-offs can affect you in this situation is, if the new case came with the stand-offs ready mounted and they don't line up with the board. everything is okay with the old case, so visually check that the stand-off configuration is the same for both cases. i assume that any external pci-e connectors required for the graphics card were attached in both situations?

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