Need help: Computer won't even start after replacing the monitor

Discussion in 'PC hardware help' started by Huskie, Oct 5, 2008.

  1. Huskie

    Huskie Member

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    Hi, all

    Recently I`ve decided to dump my old 15" roundscreen tube monitor with a brand-new 19" LCD one. So, as soon as I acquired one, I installed it and attached it to my computer (while everything was turned off, obviously). Upon turning my computer on, the monitor would simply show a message that it was receiving no signal, as if the cable wasn`t connected to my computer, eventhough I checked and it was attached just as it should. Also, I would receive an audio message from the computer saying that "The system failed VGA test". From looking at what the computer did,and how it reacted to keyboard input, after starting it up I could tell it wasn`t even able to enter BIOS.

    So, I thought maybe I had to install the driver from the CD that came with the monitor prior to attaching it to the machine, eventhough the monitor's manual mentioned no such thing. I detached the LCD monitor and attached my old one back. Upon trying to start up the computer, the same thing would happen again, monitor showing no signal from the cable, voice message about a failed VGA test and no reaction whatsoever from the computer.

    I resorted to the last option I could think of, which was replacing the VGA itself with an old one I have, again to no avail, same thing happened regardless of what monitor I plugged in.

    I checked all connectors for any dirt or bent pins that could be causing trouble and fount none. Everything in the computer is also connected as it should.

    I am out of options here, everything leads to believe that it's the motherboard's fault, eventhough I can hardly think of anything that could cause harm to the motherboard simply by plugging out a monitor and plugging another one in it's place.

    My motherboard is an ASUS A8N-SLI Deluxe (very buggy motherboard, wish I knew better when I bought it) and the manual offers absolutely no help at all. The LCD monitor is a Samsung 19" W932 model. The first VGA is an XFX GeForce 8600GT Fatality which I tried replacing with an XFX GeForce 6600 (since the motherboard doesn`t have an on-board video card and thus no place to attach the monitor's cable to).

    If any other specs are important to find out what happened I'll be glad to tell them.

    I simply fail to understand what could have possibly gone wrong. Any help is appreciated and I thank in advance those who took their time reading this.

    EDIT: Oh, and if this means my motherboard has gone fubar, could anybody point me to a good motherboard model that accepts a 64 bit AMD Athlon processor with 939 pins?
     
    Last edited: Oct 5, 2008
  2. thor999

    thor999 Regular member

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    Unfortunately, if the system cannot complete bios, yes, it would appear your mobo is at fault. First, get another computer and moniter and test everything seperately before you go throw anything away!!
     
  3. ddp

    ddp Moderator Staff Member

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    have you tried reseating the videocard as that is what the error points to?
     
  4. Huskie

    Huskie Member

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    HOw do you reset the video card? And would that help even if switching the video card itself didn`t work?
     
  5. ddp

    ddp Moderator Staff Member

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    didn't say reset but reseat as it has happened to me too in that the card jiggled loose causing the problem you are having.
     
  6. Huskie

    Huskie Member

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    Oh, sorry, misread your post. Well, before replacing the VGA i checked if the first one wasn`t loose, and after I put my old VGA in it's place I made sure it was well positioned and fixed.

     
  7. ddp

    ddp Moderator Staff Member

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    try clearing the cmos as have found that to work sometimes in kickstarting stubborn systems.
     
  8. Huskie

    Huskie Member

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    Well, I've been told that resetting the BIOS would be the last resort I'd have and if that didn't work, then there's probably a scratched track on the motherboard. If it's not a scratched track then it must have been some voodoo placed on my motherboard because then it would be absolutely against all reason.

    And resetting the BIOS didn't work. Took out the motherboards battery for over 15 minutes, which I reckon should be far more than enough to reset the whole thing, and no dice...

    So tomorrow I'm taking it to technical assistance to see what they can find out.

    Bloody bugged motherboard... ¬¬

    EDIT: Ok, so I resetted the BIOS in a wrong way. I was told to simply remove the motherboards battery for a few minutes, when in fact it requried me to move a jumper to a different position and back. This time around the BIOS was reset properly and the computer started working again and with my new LCD monitor, that is. Apparently the motherboard or VGA got "used" to the tube monitor's resolution which was below the LCD's minimum resolution, so it just wouldn't recognize the monitor and thus fail the VGA test before starting BIOS.

    Thank you very much, ddp, your last post was key to me figuring this out along with the other bits of info I gathered around. When I looked around the motherboard's manual I was looking for a way to reset the BIOS, and I didn't know that what I was actually trying to do was resetthe CMOS, so before I read your post I simply skipped that bit of the manual thinking it was something else unrelated to what I was looking for.
     
    Last edited: Oct 6, 2008
  9. ddp

    ddp Moderator Staff Member

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    no problem, teach & learn
     

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