Archived from groups: alt.comp.periphs.mainboard.asus (
More info?)
On Sun, 12 Jun 2005 14:59:14 -0400, nospam@needed.com (Paul) wrote:
>In article <g0ooa198el1qnrddnj97kbb5qevf076slc@4ax.com>, Fishlips
><fishlips@capnandysseafoodshack> wrote:
>
>> A7N8X Deluxe
>> Bios: 1001.G
>> Athlon XP 1500+
>>
>>
>> My computer has worked fine for a year or two, since I've had it.
>>
>> Today it froze up, so I turned it off and turned it back on again. It
>> worked for a while and then I left it and when I came back I saw that
>> it had frozen right up again shortly after I restarted it.
>>
>> I turned it off again, and when I tried to restart it I got this
>> message from the BIOS:
>>
>> Warning!! CPU have over speed!
>>
>> It will allow me to enter the BIOS setup, but the computer will not
>> boot. It just keeps giving that same message.
>>
>> I have not changed any settings, and the computer has never been
>> overclocked.
>>
>> There was a lot of dust inside, but a thorough cleaning with a vacuum
>> and compressed air has not helped.
>>
>> Is the CPU fried? Or could it be a different component?
>
>Is the CPU fan spinning ? Is the CPU fan plugged into the
>header ? Maybe it has come loose. That is the only suggestion
>I see in Google.
The fan was spinning.
>
>Using compressed air to clean electronics is a no-no. There
>is the potential to generate static electricity on surfaces
>where you apply the air. People have posted here, about
>their computer being dead after cleaning with compressed
>air, so it happens. Similarly, any product that causes
>an extreme temperature drop when applied (some dust-off products),
>can thermally shock and crack ICs that don't have a very
>large thermal mass, so if the dust-off can contains an
>expanding liquid, that is another reason not to use it.
>(In my experience, it is ICs like the old windowed DIP EPROMs
>that are sensitive.)
>
I didn't realize that compressed air was such a bad idea. I know that
some people discourage vacuuming because of static electricity. I
have been vacuuming computers out for many years and have been lucky
so far. I try to make sure the vacuum is grounded to the case to
avoid static. Also it is very humid here and that cuts way down on
static.
Anyway, I did a Google search on the exact phrase "CPU have over
speed" and I found that other people have had the same problem with
this board. It seems that sometimes the BIOS will think that the CPU
is a slower chip than what is actually installed, and will then assume
that the settings are wrong. The simplest solution I saw was to
change the BIOS setting "Halt On All Errors" to "Halt On No Errors."
That worked for me.
>If you used thermal paste between the CPU and heatsink, now
>might be a good time to reapply it. My preferred method, is to
>do this with the motherboard outside the computer case, as it
>is easier to see what you are doing, and reduces the risk of
>damaging something if a screwdriver slips etc. Whether that
>is practical, really depends on your computer case, and the
>size of the heatsink. I have some computer cases with a
>stiffening bar across the case opening, and that bar gets in
>the way of inserting a motherboard with heatsink attached.
>I like a heatsink that screws in place, like a Zalman 7000
>for a situation like that. With heatsinks that screw into
>place, there are no tricky clamps to fiddle with.
>
>If you want to clean a board, I would use a paper towel moistened
>with an alcohol based cleaner. The ICs on the board will be
>compatible with alcohol, and your dampened cleaning cloth can
>be used to wipe the tops of any ICs on the board. There is no
>need to wipe the smaller components.
>
>To reduce dust buildup in the future, I recommend balancing inlet
>and exhaust fan air flow (CFMs). Placing a fan in the front of the
>case, down low, blowing into the case, will help keep the dust
>floating in the air, until the exhaust fan blows it out the back.
>By reducing dead spots where the dust can settle out, you can reduce
>but not completely eliminate dust. (I don't like to use screen based
>filters that come with some computer cases, because those need to
>be cleaned regularly. Better to just design the airflow so what is
>pulled into the case, is flushed out again.)
>
>I had a computer with just one fan on the back, and it needed to be
>cleaned of dust every 3 months or so. Once I installed a fan in the
>front of the case, down low, I haven't cleaned it since. I had to
>remove the speaker that was located down there, to make room. The
>speaker is now bolted to the outside of the case
🙂 Ugly, but it
>works...
>
> Paul
Thanks for all of the advice. I have my fans set up the way you
recommend, but I had left the side off the case for a while, which, as
you know, is a bad idea. The air flow was just non-existent, and dust
got everywhere.
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