[COLUG] My weak understanding of BIOS

[David McGlone]

On Monday 27 November 2006 08:39, William Yang wrote:
> Heyo, all.
>
> I picked up a "bargain" (free, because it didn't work) 1 Ghz embedded
> system last week (it's a little CV860A 3R10 in a "light" case) which,
> unfortunately, doesn't work.  I have fan motion, but no BIOS POST beeps and
> no video or keyboard signal.  My recollection of this level of hardware
> debugging is that this is indicative of a power supply or board problem.  I
> pulled the compact flash and memory, but still got no improvement.

If it was the power supply, most likely you would not get power to the fan. if 
it was the motherboard you should get beeps.

From your description of the problem the computer is not doing the POST  so it 
sounds like you have a faulty BIOS chip. This is the reason your not gretting 
any video or keyboard signal, because it's not getting past the POST stage.
>
> I'm looking for suggestions as to references (I'm not limited to online) to
> look at in trying to track the problem on the board.  I usually just
> replace boards when they fail like this, but I'm looking at this as a
> learning experience to improve my understanding of hardware, and have a
> slightly irrational want to make this box work.

-- 
David M.