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Computer hangs during POST.

Hi

This is really strange, to me at least ...

Custom built PC - PCCM848 Motherboard.
PC boots into initial POSt screen, checks memory , drives etc.
The screen then "loses signal" and goes blank.
The PC is still whirring away in the background.
If I press any key on the keyboard, the screen powers up, and it then goes through the boot from A, boot from CD etc and ten boots from the hard drive perfectly.

I don't know if theres a message asking me to press a key in the background and the screen is just inbetween switching display modes.

I've been through the BIOS - can't figure what would be waiting for a keypress at that point.

Any ideas?

Thanks
Jase
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Mark Poirier
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It may be looking for another boot device before it gets to the 3 you see after you press the keyboard.
Check the boot sequence in the BIOS, Set them up as 1- Floppy  2 cd drive 3-HD
he hard drive may be designated as 0-1-2 with 0 being the first if you only have 1 hard drive.
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eMicros

ASKER

Alas, I've tried that.  Boot device 0 set to hdd, all others disabled. Boot from other device = no.

I've tried it on another screen too, but same problem. It sits there waiting for a keypress.  Very frustrating.

Jason
Enable display of messages during the POST - there should be a setting in the BIOS to do this.  The BIOS itself may need some value to be saved, to avoid asking you to press a key.
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ASKER

Hi

I have been through every settting in the BIOS that seems relevant.  I have disabled quick boot (enabled by default), I have disabled logo screen.

It POSTS to the point you see the drives, it would ordinarily nextshow you a table of IRQs, then it would attempt to boot off the devices configured to do so.  Instead, the screen turns off (orange light).  If you hit a key at this point, it jumps back into life and boots.

It just makes no sense.

I have tried two different TFTs & 2 AGP cards.  I have disabled all the boot devices apart from IDE0.

I can see no such "pause on xyz" type option, which is what it seems like.

Thanks
Jase


That is very irregular behavior.  I think the motherboard is bad, but I would also check if the power supply is faulty, causing the pause.
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PCBONEZ
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ASKER

~Thanks pcbonez, i'll flash the bios a little later and let you know how i get on.

jase
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Callandor - i'll try another psu if the bios flash makes no difference.

thanks
jase
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The client with this particular problem is happy to live with the pc the way it is at present.  The problem is still apparent, but having advised them that a bios flash is required and the potential for further problems this may cause, they have said they are happy to live with it. Should the problem ever worsen or need to be addressed, I shall flash the BIOS and see what happens.

rindi.  Please advise how this question should be closed.  I do not have a definitve solution for this problem - although it is perfectly possible that a BIOS flash will fix it - but I will not know until I am asked to do it by my client.

Thanks
J
Follow the instructions in my above link and ask for deletion/refund, or since a new BIOS would probably fix it, accept the answer that suggested getting a BIOS upgrade.
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ASKER

... its come back to haunt me today.  the client suffered a power loss and now the pc wont come back up at all.  Idoubt i'll get to flash the bios now, i think it was just a dodgy motherboard.  Please leave this with me as I am having a look at it tomorrow.

Jase
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The motherboard is dead after a power cut and subsequent surge, so I'll never know if flashing the BIOS would fix it.  It was just a dodgy motherboard in my opinion.

Jason
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Accepted bonez suggestion.  Don't know if it worked, but if the board had survived a power surge, it might have done.

Jase