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Old March 7th, 2010, 06:07 AM
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jtdoom jtdoom is offline
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Join Date: Jun 2001
O/S: Windows 8 Pro
Location: Belgium, East Flanders
Posts: 5,990
One Weird intel socket 775 3.2 Dualcore.
The CPU itself has no pins.
CPU gets tossed because it wont post on Known Good mobo..

it gets tossed out as not good, and all I see is fingerprint grease on the underside of that CPU.
Grease on gold.

After cleansing, lint free, CPU tests fine in other new mobo.
In original mobo, still no go, so mobo is getting removed from its box.
It looks OK, why is it wrong? (Fred works per hour, I am just quizzical.)
I put it in fixing plank, and I B Damned, the thing boots.

The solution to this has been adressed in this topic.
Clean contact.
(grease)

Good battery.
(was not checked before I did.)

Good power supply
Had been checked (was OK)

Clean contact (hmm, CPU was cleaned?)
Well, it turned out that the owner had tried to clean his weevils.
His mistakes were almost deadly (they sure cost some).

* 1; A new zalman 9700 (a flower.. not sure of exact model) on the mobo.
(Ever notice that these things actually put less bending stress on the mobo?)

* 2; a 2032 battery (hey, three dollar)

* 3; adding all missing screws, where they belonged. (That cost at least 2 cent had it been done at first....)
* 4; (not sure this was related to the zalman bridge, as zalman mount support in itself lowers stress.)
Put rubber adhesive conical supports under RAM bridges.
Them plastic DDR stiffeners will get teared loose if the OEM does NOT put all support studs and screws in place.
DDR contact themselve have a couple millimeter, but the bridge is pinned to mobo and that connection can break by bending.
(then pins are like 0.14mm square with hooks.. see)

Conclusion?
Bad contact.
Builder mistakes (too few screws) had made the owner desperate.
RAM bridge budge or CR2032. (I dunno. tested on stiff plank and had already replaced battery for the POST test. The orig case mount was "too loose" before, in my opinion.)

Owner had put fingerprint greasemarks to bottom of CPU.
He was lucky.

Revision/afterthought.
(Oh, lucky to not have to re-install. The man did not care about the hardware in se. But his backup had not been done OS-version-independent of his OS backup-tool. We learned how the grease got to CPU bottom. His first contact IT man is not a HW man.)

.. before we got to do any hands on on this, we had a dead system, a desparate guy, and we had the luck to have a intro before, a talk with Fred and the Man, and discussion about what was already done before I first saw that guy.
We would not have known detail had we not done mindbenders and questions while he was with us.

Last edited by jtdoom; March 7th, 2010 at 06:57 AM. Reason: lucky to not have to re-install
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