Re: BIOS boot problem

On Mon, 3 Aug 2026 17:29:27 -0400, Paul <[email protected]> wrote:

>On Mon, 8/3/2026 4:06 PM, Shadow wrote:
>> On Mon, 03 Aug 2026 11:12:56 -0400, [email protected] wrote:
>> 
>>> I think my old 2008 homebuilt Abit pc is finally coming to the end of
>>> its journey. It has started hanging on the boot at the truck picture
>>> logo (where you have the option of Delete-ing into the BIOS). I could
>>> press Enter or Tab a few times and it would stagger on, get to my BCD
>>> menu and then boot successfully any OS I wanted.
>>>
>>> I replaced the CMOS battery and all was well -  for a day, next AM it
>>> hung again, first boot of the day. The  old battery measured 3.2v
>>> after I removed it. The new one had measured 3.3v before I put it in. 
>>>
>>> I don't think I cleared the BIOS, just stuck the new battery in.
>>>
>>> Anyone, (Paul?) have any ideas how to save my precious old sweetheart?
>> 
>> 	Dunno if BIOS software can suffer from Bit Rot. If it can,
>> maybe, just maybe re-flashing with a good image could correct it.
>> 	Paul probably knows...
>> 	[]'s
>> 
>
>I think the main BIOS block has a checksum.
>
>The block that starts before the main BIOS
>block, checks the checksum of the main one,
>before jumping to it.
>
>   Paul

	I've had checksum errors in the past, usually after a
lightning strike or even a simple power cut. But always remedied by
"loading setup defaults".
	Haven't seen it since I got a no-break.
	Didn't realize there was a checksum for the flashable part of
the BIOS before the checksum for the user's choices.
	[]'s
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