Re: Hardware - Boot issues: No post
Just out of curiosity, ...
On Wed, Aug 10, 2011 at 4:30 AM, KS <lists04@fastmail.fm> wrote:
>
> On Mon, 08 Aug 2011 23:47 -0500, "Stan Hoeppner"
> <stan@hardwarefreak.com> wrote:
>> On 8/8/2011 6:59 PM, KS wrote:
>>
>> > I shut down the machine and tried to boot it with just the Mushkin RAM.
>> > Same beep sequence followed.
>>
>> If you put the Mushkin back in the original sockets, then you likely:
>>
>> 1. Damaged the mainboard PCB when inserting modules
>> 2. Lodged a screw, or something conductive, shorting the board
>> 3. Got dust, debris in the DDR socket shorting some pins
>> 4. ??
>>
>> BTW, attempting to boot without a video device will also cause beeps.
>> You removed your PCIe vid card. Does this mobo also have onboard video?
>> If not, put the vid card back in before attempting to power it on.
>>
>> If it boots with the Mushkin in the two original sockets, but not with
>> one stick in the "other" socket for dual channel operation, then other
>> that socket is likely bad, or has something tiny wedged in between pins.
>>
>> --
>> Stan
>>
>
> Thanks Stan. The motherboard has onboard video. But the behaviour of the
> machine is the same with or without the PCIe video card.
>
> And the machine does not boot anymore with any of the RAM modules.
> Assuming that all the memory modules were not zapped together, it is
> quite likely the CPU is toast. I can only check this using another
> machine like this. I might be able to do that tomorrow (and some
> memtest86 too).
Have you used a flashlight to check under the motherboard and other
places for dust, lint, loose screws, etc? Lots of things you won't see
without a flashlight.
Have you taken a vacuum cleaner to the slots and, well, everything?
(Carefully, of course.) Even just a year can be enough to build up
quite a bit of lint and dust, and those tend to "break" electronics as
quickly as anything. Vacuuming can often be a quick cure for a lot of
things.
Just make sure you're careful about static electricity, and avoid
knocking off parts, vacuuming up delicate parts, or bumping things and
"mis-adjusting" them, especially very low reactance coils (single, or
even half-loop coils, and single-plate air capacitors) which you may
not recognize as such at first.
Have you used an eraser to clean the fingers of your memory boards?
The original ones, especially.
Again, be somewhat careful to avoid letting the eraser knock parts off
the board and such. And make sure you hold the board so that the
eraser dust doesn't fall into or under parts.
Joel Rees
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