Solved dell t3500 memory failure detected at DIMM1

January 13, 2012 at 02:07:38
Specs: Macintosh
At the time of booting, the system Dell Precision T3500 with 16GB RAM (in 4 slots?), before coming to a boot loader, is reporting:
Memory failure detected at DIMM1. Press F1 to boot, F2 to run setup, F5 to run on-board diagnostics.
I pressed F5. The diagnostics ran for an hour and then asked to run another such module, and took around half an hour. No problems detected by the diagnostics.
Next time when I boot, it reports the same error.
What could be the reason?
Do I have to take some steps or just press F1 every time it boots?
Please advise.

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January 13, 2012 at 04:51:11
RAM modules may be improperly seated. Remove and re-seat them firmly in the slots.

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January 13, 2012 at 05:52:55
If the above does not help, run Memtest86 via a bootable CD to do a more thorough test. If errors or if it does not complete the tests, repeat with one stick of memory at a time. If all test good separately, than retest one stick in each slot at a time (testing the slots this time). If any memory tests bad, replace (dual channel memory is best replaced in pairs). If any slots test bad, check if your system is still under warranty, the board will need replacing (though you can try removing and reinserting the memory 4 or 5 times into the slot to see if that cleans up the contacts).

You have to be a little bit crazy to keep you from going insane.

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January 13, 2012 at 07:31:54
✔ Best Answer
The above suggestions are good. However, contact corrosion is common with RAM. I suggest you remove and re-seat each RAM stick 4 or 5 times to burnish the contacts. If the problem persists then follow the advice in #2 above.

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