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Bootproblem

Posted on 1998-11-05
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Last Modified: 2010-04-27
I have a 486Dx33 with VESA local bus and AMI-bios and it just won't boot. The screen stays black and i don't even get a "beep error code". I have tried to discharge the CMOS, turned off the machine and press the ins key and all ohter well known tricks. Nothing happens. Once the setup menu came up and then the machine locked up. What to do (I don't have access to a POST-code card).
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Question by:bulo
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by:bulo
ID: 1128404
I'm new on this site so i really dont know how many points to spend on this question. Ideas??
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Expert Comment

by:rmarotta
ID: 1128405
Are you getting any response at all after power on?
(Keyboard LED's flashing, drive activity, etc.)
If not, try removing and re-seating your RAM modules and video card in their sockets.
Can you tell if the CPU gets warm to the touch?
Regards,
Ralph

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Accepted Solution

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ITjan earned 150 total points
ID: 1128406
Can you hear the power supply's fan?  Are any of the lights on the front of the computer on? Can you hear the hard drive spinning?- I guess I'm trying to find out if the computer is getting power, because you are not hearing the "Beep."  If it is not getting any power supply you might need to replace the power supply on it, which should cost you about $20-$30 at a local computer store.

Another problem might be that the AMI-BIOS  chip lost its memory.  I've had that happen, where I was working on the computer and touched the plug for the keyboard and a little static discharge hit went off.  The computer then had problems booting up properly.  If that is the problem you might be better off buying a new/used motherboard, because there are may AMI-BIOS types and each is specific to the motherboard manufacturer - so you would have to get the exact AMI-BIOS version.

A third problem that it might be isthat you have a dead motherboard.  A 486DX33 is probably at least 5-8 years old, and it might have just died.  If that is the problem you can either buy a new computer or buy a used 486 motherboard and swap that out - again that is probably about $30 to $60 dollars at a local computer store that sells used parts.
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Author Comment

by:bulo
ID: 1128407
No power problem. If the bios has lost its memory or if the motherboard is dead; why did the setup munu show up once?
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Expert Comment

by:ITjan
ID: 1128408
From what it sounds, the setup menu might have shown up once, but it didn't work properly and it has not shown up again.  It might have that it showed up once, right before either the BIOS or the Motherboard died.  The computer that I had with the BIOS problem booted up with problems identifying internal cards, memory, etc.  

If you are willing to open up your computer, you might try to unplug all the hardware attached to the mother board, leaving only the video card, the memory simms, and power.  Make sure you mark all of the cables so you know exactly where to plug them back in and I would also follow Ralph's advice above on reseating the memory and the video cards.  Then turn it on and see if you get anything on the screen.

 
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Author Comment

by:bulo
ID: 1128409
I did try all of that before i wrote this question. I did even try another videocard in case the original one was invalid. Guess i have a broken motherboard or bios then.

Thanks for your time !
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Expert Comment

by:ITjan
ID: 1128410
You're welcome bulo....let me know if you need any additional help.
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