[CentOS] Unable to POST after suspend

Robert kerplop at sbcglobal.net
Tue Sep 11 19:31:45 UTC 2007


Mark Rosenstand wrote:
> On Tue, 2007-09-11 at 13:19 +0000, gjgowey at tmo.blackberry.net wrote:
>   
>> I have one idea that may work.  Try seeing if your bios supports a bios upgrade floppy (it would say so in the owners manual).  Now by bios upgrade floppy I don't mean the usual type that use an os.  There are some that the bios will directly read from without an os being used.  The concept is to recover from failed bios upgrades.  The reason I suggest this is because I think the setting that's keeping your system off is hiding in your bios' acpi table and I don't think a bios reset will dump it, but a bios upgrade might.
>>     
>
> My motherboard do support such BIOS upgrades (really nice since it's OS
> independent) but you need to get to the POST before you can ask it to
> search for the floppy.
>
> But it won't power on at all. The CPU FAN doesn't start, the disk
> doesn't rotate, the monitor doesn't get any signal. The only thing that
> indicates the slightest sign of life is the LED on the motherboard and
> my keyboard if I press Num Lock.
>
> Is there something on the motherboard I can disconnect to reset the ACPI
> table?
>
>   
I would try removing all cards from the PCI slots, disconnect the IDE 
cables and any other I/O than might be connected and try it that way. 
Obviously, it won't go very far w/o a keyboard and you won't be able to 
see much w/o a video card but it SHOULD stay powered on.  An old PCI 
video card might be nice to try, in the event that power will stay on 
with all I/O pulled.  Also, you might try using different memory -- or 
try the original memory in another box.  Also, if you've been inside the 
box already, it might be worthwhile to turn that baby upside down and 
shake and/or jar it, just in case you dropped a screw or washer 
somewhere inside.

**




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