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Blank Screen

Discussion in 'Hardware' started by Ellie Jane, Jun 5, 2004.

  1. Ellie Jane

    Ellie Jane Bit Poster

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    While cleaning the inside of one of the kids computers I removed both of the hard drives to replace the IDE cable. When I put everything back together and powered the system up I just get a blank screen. I've tried a different monitor on it, and changed the graphics card, still no change. I know the IDE cable is fine and I can't think of anything else.

    Anyone got any suggestions?
     
  2. Nelix
    Honorary Member

    Nelix Gigabyte Poster

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    I know it sounds daft and you have probably already done it but check all the cables are pushed in fully (power and IDE). It should'nt make a difference but you could swap the position of the hard drives round on the IDE cable and check that it is plugged into the IDE1 slot on the motherboard.

    do you get lights on the front of the computer and can you hear the hard drives spin up at all at power up.

    I'm sure someone will be along soon to give you a few more ideas to try but in the meantime try out the above.

    HTH
     
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  3. Ellie Jane

    Ellie Jane Bit Poster

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    I've tried switching the hard drives around, ensured that the IDE cables are in correctly and that everything is pushed in properly. Everything is powering up properly but it's as if the monitor isn't connected, nothing happens on screen at all, which is why I tried replacing the graphics card
     
  4. Nelix
    Honorary Member

    Nelix Gigabyte Poster

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    If the graphics card is PCI try moving it to a different slot and see if that helps
     
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  5. SimonV

    SimonV Petabyte Poster Administrator

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    On a few old machines we had at a place a worked this would happen if we had the hard disk on the end of the IDE cable and not the middle (or was it the other way around? :oops: ) anyway. Do you hear the POST beep when you start the PC try removing the IDE cables from the HD and CD ROM an see if it will POST then you may be able to find the cause of the problem.

    HTH
     
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  6. Ellie Jane

    Ellie Jane Bit Poster

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    I've removed the HDDs and CD ROM and removed their IDE cables, the is no POST at all
     
  7. Jakamoko
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    Jakamoko On the move again ...

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    Checked the CMOS battery hasn't been dislodged ?
     
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  8. SimonV

    SimonV Petabyte Poster Administrator

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    So your getting no POST at all with the IDE in and out. Is the fan of the power supply unit spinning when you hit the power button?
     
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  9. AJ

    AJ Administrator Administrator

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    no post sound like power to the mobo. Power leads attached? power supply still ok or plugged in fan in PS turning?

    just a few thoughts

    one other thing is the CPU seated okand the cooling fan turning. Could be worth taking the CPU out and re-seating it.

    hey its worth a try.
     
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  10. Ellie Jane

    Ellie Jane Bit Poster

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    CMOS battery is in ok, PSU fan spinning and power is going to the mobo as the CPU fan is spinning ok
     
  11. AJ

    AJ Administrator Administrator

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    Stil worth reseating the CPU. If that's ok then it does look a bit terminal, either Mobo or CPU. If you have a spare, try replacing the CPU.

    HTH
     
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  12. SimonV

    SimonV Petabyte Poster Administrator

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    SO power to the PSU and CPU fan but no post, have you checked the RAM is seated well, try moving the RAM to another spare slot if you have one.
     
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  13. Jakamoko
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    Jakamoko On the move again ...

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    What do the lights on the drives do (looking from the front) when you power on, EJ ?
     
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  14. Ellie Jane

    Ellie Jane Bit Poster

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    I removed the CPU fan and the CPU and reseated them, I moved the RAM earlier. When I power up the CD ROM drive light flashes for a few seconds then goes out as usual but the floppy drive light is staying on for as long as it's powered up.
     
  15. Jakamoko
    Honorary Member

    Jakamoko On the move again ...

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    Ellie Jane - there's the answer, I reckon - the IDE to the floppy is the wrong way around. sure sign, the floppy light stays on, hence I asked
     
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  16. AJ

    AJ Administrator Administrator

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    have you checked that the ide and the power cable are the correct way around on the FDD.
     
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  17. Ellie Jane

    Ellie Jane Bit Poster

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    Changed floppy IDE round and now the light doesn't come on at all
     
  18. Ellie Jane

    Ellie Jane Bit Poster

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    Not to be outdone by a dam fool pc I've been trying everything I can to solve the prob, but a lack of display doesn't make things easy. Then it hit me, the CMOS battery hadn't been dislodged but it might be too low on power to be doing it's job so I flashed the BIOS to see what would happen and "BINGO" a POST bleep, the monitor flickered into life and a message on screen said CMOS battery low :D.

    I'm off to get a new CMOS battery, thanks for the suggestions lads and lassies.

    T.T.F.N
    Ellie Jane
     
  19. AJ

    AJ Administrator Administrator

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    Well there you go. :D

    Keep us informed
     
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  20. tripwire45
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    tripwire45 Zettabyte Poster

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    What caused you to replace the IDE cable in the first place? Was there something going on with the computer that caused you to replace the cable? If there were previous symptoms, they may be related to the current dilemna. If there were prior symptoms, what were they?

    A couple of things come to mind: Check the monitor again...not just the connections but the contrast controls and such. I know it may be ridiculous, but if the brightness controls were accidently adjusted all the way down, you won't get a monitor image but everything else will be fine. Also, when all else fails after a hardware change, try putting it back the way it was before the change. In this case, that means putting the original cable back in the way it was when the machine was still working.

    One more thing...were you wearing a ESD strap or similar protection when you went into the box or did you equalize your static potential by touching the frame before putting your hands inside. Even a very minor electrostatic discharge inside a machine can cause a catastrophic failure of computer circuitry.

    Just the few thoughts I can come up with over my first cup of coffee for the day (7 hours earlier than forum time, here). Let us know how this gets on.

    EDIT: Oops...Sorry. :oops: I didn't see there was a "page 2" to the thread before shooting my big mouth off. You've already gotten the whole thing sorted out. Good job. :)
     
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